Teclast T40 Air tablet review – Very good runtimes despite not being too expensive

Name: Teclast T40 Air
Brand: Teclast

Lightweight distance runner. The Teclast T40 Air is a relatively slim 10.36-inch tablet that doesn't weigh that much. Even so, it features a huge battery which resulted in excellent runtimes during our test. In this review, you can find out about what other qualities it has — and whether it has any weaknesses, too.

Florian Schmitt, 👁 Florian Schmitt (translated by Daisy Dickson), Published 11/22/2023 🇩🇪 🇸🇪 ...

Android ARM Tablet

Teclast has lots of tablet models for sale, especially on online shops such as Amazon. The Chinese manufacturer has amassed quite a bit of interest in its products, as they are mostly relatively inexpensive and still offer enough power for everyday use. They also usually feature at least one distinctive feature, such as mobile data support, lots of storage or an extra-powerful battery.

The Teclast T40 Air is a mid-range tablet which can currently already be found for well under US$200. It is portable thanks to its 10.36-inch display, features a relatively slim case and it can even make use of the 4G network. Let's take a closer look at how the T40 Air performed in our test and in everyday use.

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Teclast T40 Air (T Series)

Processor

UNISOC T616 8 x 1.8 - 2 GHz, Cortex-A75 / A55

Graphics adapter

ARM Mali-G57 MP1

Memory

8 GB

Display

10.36 inch 5:3, 2000 x 1200 pixel 225 PPI, capacitive touchscreen, IPS, glossy: yes, 60 Hz

Storage

256 GB eMMC 5.1 Flash, 256 GB

, 200 GB free

Connections

1 USB 2.0, Audio Connections: 3.5mm audio port, Card Reader: microSD up to 1 TB, Brightness Sensor, Sensors: gravity, gyroscope, hall

Networking

802.11 a/b/g/n/ac (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5/), Bluetooth 5.0, 2G (850/900/1800/1900 MHz), 3G (Band 1/2/4/5/8), 4G (Band 1/2/3/4/5/7/8/12/17/20/28/38/40/41/66), Dual SIM, LTE, GPS

Size

height x width x depth (in mm): 7.7 x 246 x 156 ( = 0.3 x 9.69 x 6.14 in)

Battery

7200 mAh Lithium-Ion, 18-watt charging

Charging

fast charging / Quickcharge

Operating System

Android 13

Camera

Primary Camera: 13 MPix LED flash
Secondary Camera: 8 MPix

Additional features

Speakers: stereo speakers, charger, USB cable, SIM tool, 12 Months Warranty, fanless

Weight

464 g ( = 16.37 oz / 1.02 pounds) ( = 0 oz / 0 pounds)

Price

240 Euro

Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

see all specifications

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Possible competitors compared

Rating	Date	Model	Weight	Height	Size	Resolution
80 %	11/2023	Teclast T40 Air T616, Mali-G57 MP1	464 g	7.7 mm	10.36"	2000x1200
79.9 %	10/2023	Teclast M50 Pro T616, Mali-G57 MP1	435 g	7.9 mm	10.10"	1920x1200
81.2 %	05/2023	Samsung Galaxy Tab A7 LTE 2022 T618, Mali-G52 MP2	477 g	7 mm	10.40"	2000x1200
80 %	03/2023	Lenovo Tab M10 Gen 3 T610, Mali-G52 MP2	460 g	8.5 mm	10.10"	1920x1200
80.8 %	02/2023	Blackview Tab 13 Helio G85, Mali-G52 MP2	450 g	7.7 mm	10.10"	1920x1200

Case – Modern metal

The manufacturer has chosen a metal case which has a small plastic insert on the top edge to ensure better mobile network reception. The dark-gray case feels very high-quality and its stability is okay — however, we noted some image errors when we twisted the tablet while the screen was switched on. Plus, it makes some subtle creaking noises when you do so.

The bezels are relatively slim, while still allowing you to hold the tablet comfortably without accidentally activating the touchscreen. With a weight of 464 grams, the device isn't all too heavy and it can be held for longer periods of time without straining your arms too much.

It isn't protected against the elements, which means you should probably keep the tablet away from too much water and dust.

Size comparison

Samsung Galaxy Tab A7 LTE 2022 Teclast T40 Air Lenovo Tab M10 Gen 3 Blackview Tab 13 Teclast M50 Pro DIN A5 ❌

Connectivity – The Teclast tablet has a lot of storage

The tablet has 256 GB of storage — very impressive for this price range — giving you enough space for pictures, videos and lots of other things. Its 8 GB RAM is also very generous for this price class.

The device's USB-C port is only connected with USB-2.0 speeds internally, leading to data transfers being on the slower side, while transmitting the screen content through a cable to an external monitor is not possible.

It features a 3.5-mm audio jack, which means you can also use your analogue headphones without any issues. However, it doesn't support NFC, so you can't use contactless payment services, for example.

If you hold the tablet horizontally, then the SIM and microSD card slot are situated on the right side of the case. Here, you can install a nano SIM in order to use mobile data or to make telephone calls. For the latter, we would recommend using a headset if you don't want passers-by to overhear your conversations.

Top: standby button, volume rocker, microphones

Right: SIM/microSD slot, speaker, USB-C port, 3.5-mm audio jack

microSD card reader

In our test, the Teclast T40 Air's microSD card reader proved to be quite fast using our Angelbird V60 as a reference card. This makes it easy to expand the tablet's already large storage.

SD Card Reader - average JPG Copy Test (av. of 3 runs)
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash (Angelbird V60)	28.4 MB/s
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash (Angelbird V60)	27.6 MB/s -3%
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash (Angelbird V60)	25.3 MB/s -11%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash (Angelbird V60)	21.3 MB/s -25%
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash (Angelbird V60)	20.9 MB/s -26%

Cross Platform Disk Test (CPDT)

Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash; SDCard Sequential Write 0.5 GB; Angelbird V60: Ø41.4 (28.2-50.2)

Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash; SDCard Sequential Write 0.5 GB: Ø26.6 (11.8-45.4)

Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash; SDCard Sequential Write 0.5 GB; Angelbird V60: Ø34.5 (12.9-44.1)

Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash; SDCard Sequential Write 0.5 GB; Angelbird V60: Ø34 (17.4-45.3)

Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash; SDCard Sequential Write 0.5 GB; Angelbird V60: Ø25.9 (16.1-46.4)

Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash; SDCard Sequential Read 0.5 GB; Angelbird V60: Ø72.3 (33.2-86.5)

Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash; SDCard Sequential Read 0.5 GB: Ø73.6 (41.9-85.8)

Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash; SDCard Sequential Read 0.5 GB; Angelbird V60: Ø73.6 (44.2-82)

Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash; SDCard Sequential Read 0.5 GB; Angelbird V60: Ø71.3 (43.6-81.3)

Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash; SDCard Sequential Read 0.5 GB; Angelbird V60: Ø75.8 (38.2-83.5)

Software – Insecure updates

The operating system installed by the manufacturer is quite close to stock Android 13. It doesn't have any bloatware (third-party sponsored apps) installed. At the time of testing, the latest security patch was from June 2023 — not terribly up to date.

Upon asking the manufacturer, it told us that updating to new Android versions should be possible. It is currently in the process of working on an overview of all its products' update supplies — this should still be released in 2023. In the past, Teclast tablets have been given new software versions rather sporadically, however, they did always seem to resolve any issues that users had reported.

It features a Widevine certification, meaning you can also view streaming content in HD.

Communication and GNSS – Mobile data included

WiFi 5 is the fastest WLAN standard mastered by the Teclast T40 Air, leading to quite consistent (and above-average for the price cass) transfer rates. Close to the router, web pages are loaded relatively quickly and it has access to the full reception. 10 metres away from the router and with 3 walls in between, we had access to 3/4 of the reception and it sometimes took a few moments for pages to load.

Within this price class, one thing isn't always standard (although it isn't entirely new either): The Teclast T40 Air features LTE support. It has access to a good selection of frequencies, meaning you at least shouldn't have any issues connecting to the internet on your travels that are limited to your own continent. The signal quality was decent in our test, but a little worse than on high-end phones.

Networking
iperf3 receive AXE11000
Blackview Tab 13	332 (306^min - 352^max) MBit/s +8%
Lenovo Tab M10 Gen 3	319 (310^min - 325^max) MBit/s +4%
Teclast M50 Pro	319 (259^min - 336^max) MBit/s +4%
Samsung Galaxy Tab A7 LTE 2022	317 (251^min - 326^max) MBit/s +3%
Teclast T40 Air	308 (238^min - 322^max) MBit/s
iperf3 transmit AXE11000
Blackview Tab 13	370 (336^min - 376^max) MBit/s +3%
Teclast M50 Pro	358 (316^min - 374^max) MBit/s 0%
Teclast T40 Air	358 (337^min - 370^max) MBit/s
Lenovo Tab M10 Gen 3	351 (333^min - 366^max) MBit/s -2%
Samsung Galaxy Tab A7 LTE 2022	218 (172^min - 258^max) MBit/s -39%

Teclast T40 Air; iperf3 receive AXE11000; iperf 3.1.3: Ø308 (238-322)

Teclast T40 Air; iperf3 transmit AXE11000; iperf 3.1.3: Ø358 (337-370)

The location module didn't work as well during our test when using the app — it did manage to find quite a few satellites and it worked with almost all bigger networks, however, even after 10 minutes, it didn't manage to locate us outside.

These aren't the best conditions for our practical test, a bike trip on which we compare the tablet with a Garmin Venu 2 smartwatch. Indeed, the location determined by the Teclast T40 Air always deviated slightly from the route we actually took.

All-in-all, we didn't notice any grave errors, meaning the tablet can definitely be used for locating if you don't require good accuracy. However, its failures during our app test and its less precise positioning in our practical test lead us to not comfortably be able to recommend it as a navigation device.

Teclast T40 Air location services – overview

Teclast T40 Air location services – turning point

Teclast T40 Air location services – bridge

Garmin Venu 2 location services – overview

Garmin Venu 2 location services – turning point

Garmin Venu 2 location services – bridge

Cameras – Bad even for a tablet

You shouldn't expect too much from the Teclast T40 Air's cameras. Many tablets see this as an area on which to save money — at the end of the day, a device as large as this will not be prioritized as a device for taking pictures and instead, it will likely only be used to document certain situations, scan documents or scan QR codes.

For this, its 13-megapixel back camera with an LED flash is sufficient. On the other hand, if you are expecting great photos, then you will be disappointed by the tablet's blurry photos which lack dynamics in light as well as dark areas. Its photos also have quite a hefty blue tint and larger areas are often very grainy. In the photo of our surroundings, you can't see much detail and some areas are even very unsharp. In low-lighting conditions with high levels of contrast, dark areas remain exactly that: dark.

Videos can be recorded at a maximum of 1080p and at 30 fps.

On the front, the tablet features an 8-MP sensor which takes quite dark photos, even in good lighting conditions. When zoomed in, you can only identify limited details and the photo appears quite grainy.

The camera system is good enough for taking snapshots, however, it can't even keep up with mid-range camera phones.

Image Comparison

Choose a scene and navigate within the first image. One click changes the position on touchscreens. One click on the zoomed-in image opens the original in a new window. The first image shows the scaled photograph of the test device.

Main camera plant Main camera surroundings Main camera low light

click to load images

click to load images

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The Teclast T40 Air's main camera even struggled to deliver clean images in our test lab: Its contrast is low, areas appear unclean and all-in-all, photos don't look the best. At only 1 lux illumination, the sensor isn't able to depict any visible content.

ColorChecker Teclast T40 Air: 8.23 ∆E min: 1.86 - max: 15.27 ∆E

Accessories and warranty – 12-month manufacturer warranty

Teclast offers a 12-month warranty on all of its devices.

Upon asking, the manufacturer recommends contacting the distributor for any repair processing in the event of a warranty claim.

The T40 Air is supplied with a charger, a USB cable and a SIM tool. Teclast also offers a transparent case with a stand function, which can be found online for about US$15.

Input devices & operation – Mostly smooth

You can't expect refresh rates above 60 Hz on this tablet, which means it barely feels smooth to operate. Even so, the Teclast T40 reacts reliably and sensitively — we only noted it lagging a little when running more intensive apps.

The hardware buttons along the top edge can be found well and have a clear pressure point. It doesn't feature a fingerprint sensor — only 2D facial recognition, which isn't quite as safe against manipulation but still, it unlocks the Teclast tablet reliably.

Display – Seeing blue?

The Teclast T40 Air has a display size of 10.36 inches, a resolution of 2,000 x 1,2000 pixels and bases on IPS technology. Its maximum brightness is about average for this class — we measured an average of 296 cd/m², which is mostly suited for indoor use without any strong light.

You do notice quite the blue tint when glancing at the display. This was confirmed using our spectrophotometer during the CalMAN test. It can be mitigated slightly using the T40 Air's onboard tools — especially using Night-Light mode. However, its color depiction is never amazing.


271 cd/m²	289 cd/m²	302 cd/m²
302 cd/m²	319 cd/m²	299 cd/m²
301 cd/m²	295 cd/m²	289 cd/m²

Distribution of brightness

tested with X-Rite i1Pro 2

Maximum: 319 cd/m² (Nits) Average: 296.3 cd/m² Minimum: 7.71 cd/m²
Brightness Distribution: 85 %
Center on Battery: 319 cd/m²
Contrast: 725:1 (Black: 0.44 cd/m²)
ΔE Color 10.9 | 0.5-29.43 Ø5
ΔE Greyscale 11.5 | 0.57-98 Ø5.3
87.9% sRGB (Calman 2D)
Gamma: 2.035

	Teclast T40 Air IPS, 2000x1200, 10.36	Teclast M50 Pro IPS, 1920x1200, 10.10	Samsung Galaxy Tab A7 LTE 2022 IPS, 2000x1200, 10.40	Lenovo Tab M10 Gen 3 IPS, 1920x1200, 10.10	Blackview Tab 13 IPS, 1920x1200, 10.10
Screen		26%	16%	29%	35%
Brightness middle	319	248 -22%	322 1%	343 8%	344 8%
Brightness	296	234 -21%	303 2%	332 12%	330 11%
Brightness Distribution	85	86 1%	89 5%	94 11%	93 9%
Black Level *	0.44	0.2 55%	0.45 -2%	0.31 30%	0.27 39%
Contrast	725	1240 71%	716 -1%	1106 53%	1274 76%
Colorchecker dE 2000 *	10.9	5.3 51%	7.02 36%	5.9 46%	5.32 51%
Colorchecker dE 2000 max. *	19.02	11.95 37%	10.38 45%	11.2 41%	11.27 41%
Greyscale dE 2000 *	11.5	7.1 38%	7.1 38%	7.9 31%	6.2 46%
Gamma	2.035 ^108%	2.327 ^95%	2.179 ^101%	2.184 ^101%	2.106 ^104%
CCT	11482 ^57%	8112 ^80%	8730 ^74%	9198 ^71%	8023 ^81%

* ... smaller is better

Screen Flickering / PWM (Pulse-Width Modulation)

ℹ

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.

Screen flickering / PWM not detected

In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 17903 (minimum: 5 - maximum: 3846000) Hz was measured.

We didn't note any PWM, even at the lowest brightness setting.

On the other hand, its reaction speeds are very slow, making smooth gaming barely possible.

Display Response Times

ℹ

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.

↔ Response Time Black to White
33.1 ms ... rise ↗ and fall ↘ combined	↗ 14.5 ms rise
33.1 ms ... rise ↗ and fall ↘ combined	↘ 18.6 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers. In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 88 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (21.5 ms).
↔ Response Time 50% Grey to 80% Grey
58.4 ms ... rise ↗ and fall ↘ combined	↗ 32.4 ms rise
58.4 ms ... rise ↗ and fall ↘ combined	↘ 26 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers. In comparison, all tested devices range from 0.2 (minimum) to 636 (maximum) ms. » 94 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (33.7 ms).

Outside, the display is already quite reflective on cloudy days and as a result of its poor brightness, it doesn't remain all too legible.

Even when viewed from extreme angles, the display content's colors barely change.

Performance – Normal power for this price class

The Unisoc T616 is an SoC which is often installed into mid-range tablets and phones, meaning it is well-suited for the Teclast T40 Air. The processor has a maximum clock rate of up to 2 GHz and it performed similarly fast to comparable devices during the benchmarks.

In everyday use, you only have to deal with dropped frames when running more demanding apps — surfing the web, taking a look at photos or watching movies rarely leads to any dropped frames.

Geekbench 5.5
Single-Core
Average of class Tablet (140 - 1892, n=68, last 2 years)	664 Points +90%
Samsung Galaxy Tab A7 LTE 2022	373 Points +7%
Teclast M50 Pro	360 Points +3%
Average UNISOC T616 (298 - 380, n=7)	351 Points 0%
Teclast T40 Air	350 Points
Lenovo Tab M10 Gen 3	346 Points -1%
Multi-Core
Average of class Tablet (312 - 8524, n=68, last 2 years)	2362 Points +70%
Teclast M50 Pro	1469 Points +6%
Average UNISOC T616 (1184 - 1502, n=7)	1410 Points +2%
Teclast T40 Air	1387 Points
Samsung Galaxy Tab A7 LTE 2022	1345 Points -3%
Lenovo Tab M10 Gen 3	1267 Points -9%

Geekbench 6.2
Single-Core
Average of class Tablet (185 - 2107, n=44, last 2 years)	812 Points +90%
Teclast M50 Pro	439 Points +3%
Average UNISOC T616 (427 - 440, n=4)	434 Points +2%
Teclast T40 Air	427 Points
Multi-Core
Average of class Tablet (493 - 5652, n=44, last 2 years)	2287 Points +55%
Teclast M50 Pro	1606 Points +9%
Average UNISOC T616 (1474 - 1606, n=4)	1556 Points +6%
Teclast T40 Air	1474 Points

Antutu v9 - Total Score
Average of class Tablet (92766 - 1416727, n=52, last 2 years)	453858 Points +99%
Teclast M50 Pro	230647 Points +1%
Average UNISOC T616 (228124 - 235075, n=4)	230591 Points +1%
Teclast T40 Air	228517 Points
Samsung Galaxy Tab A7 LTE 2022	213115 Points -7%
Lenovo Tab M10 Gen 3	199786 Points -13%

PCMark for Android - Work 3.0
Average of class Tablet (3195 - 17267, n=65, last 2 years)	8736 Points +10%
Teclast M50 Pro	8055 Points +1%
Average UNISOC T616 (7936 - 8066, n=6)	8004 Points +1%
Teclast T40 Air	7936 Points
Samsung Galaxy Tab A7 LTE 2022	7404 Points -7%

CrossMark - Overall
Average of class Tablet (172 - 1585, n=51, last 2 years)	672 Points +76%
Teclast M50 Pro	390 Points +2%
Average UNISOC T616 (382 - 394, n=4)	388 Points +2%
Teclast T40 Air	382 Points
Samsung Galaxy Tab A7 LTE 2022	359 Points -6%
Lenovo Tab M10 Gen 3	356 Points -7%

BaseMark OS II
Overall
Average of class Tablet (444 - 8886, n=52, last 2 years)	3631 Points +79%
Samsung Galaxy Tab A7 LTE 2022	2550 Points +26%
Lenovo Tab M10 Gen 3	2283 Points +13%
Teclast M50 Pro	2126 Points +5%
Average UNISOC T616 (2026 - 2182, n=4)	2095 Points +3%
Teclast T40 Air	2026 Points
System
Average of class Tablet (1103 - 14097, n=52, last 2 years)	6543 Points +32%
Samsung Galaxy Tab A7 LTE 2022	5507 Points +11%
Teclast M50 Pro	4969 Points 0%
Average UNISOC T616 (4795 - 5151, n=4)	4969 Points 0%
Teclast T40 Air	4959 Points
Lenovo Tab M10 Gen 3	4777 Points -4%
Memory
Average of class Tablet (916 - 8890, n=52, last 2 years)	4284 Points +63%
Lenovo Tab M10 Gen 3	3412 Points +30%
Samsung Galaxy Tab A7 LTE 2022	3178 Points +21%
Teclast M50 Pro	3035 Points +15%
Average UNISOC T616 (2632 - 3255, n=4)	2941 Points +12%
Teclast T40 Air	2632 Points
Graphics
Average of class Tablet (580 - 31738, n=52, last 2 years)	6639 Points +484%
Samsung Galaxy Tab A7 LTE 2022	2124 Points +87%
Lenovo Tab M10 Gen 3	1497 Points +32%
Average UNISOC T616 (1137 - 1173, n=4)	1151 Points +1%
Teclast M50 Pro	1148 Points +1%
Teclast T40 Air	1137 Points
Web
Average of class Tablet (10 - 1907, n=52, last 2 years)	1205 Points +6%
Teclast M50 Pro	1181 Points +4%
Average UNISOC T616 (1096 - 1181, n=4)	1148 Points +1%
Samsung Galaxy Tab A7 LTE 2022	1138 Points 0%
Teclast T40 Air	1135 Points
Lenovo Tab M10 Gen 3	1114 Points -2%

AImark - Score v3.x
Average of class Tablet (84 - 156427, n=39, last 2 years)	5325 Points +1724%
Samsung Galaxy Tab A7 LTE 2022	304 Points +4%
Lenovo Tab M10 Gen 3	302 Points +3%
Average UNISOC T616 (292 - 321, n=4)	302 Points +3%
Teclast M50 Pro	297 Points +2%
Teclast T40 Air	292 Points

UL Procyon AI Inference for Android - Overall Score NNAPI
Average of class Tablet (1662 - 44323, n=49, last 2 years)	8899 Points +216%
Samsung Galaxy Tab A7 LTE 2022	4094 Points +45%
Average UNISOC T616 (2817 - 4209, n=5)	3157 Points +12%
Teclast M50 Pro	2892 Points +3%
Teclast T40 Air	2817 Points
Lenovo Tab M10 Gen 3	1662 Points -41%

Legend

Teclast T40 Air UNISOC T616, ARM Mali-G57 MP1, 256 GB eMMC 5.1 Flash

Teclast M50 Pro UNISOC T616, ARM Mali-G57 MP1, 256 GB eMMC 5.1 Flash

Samsung Galaxy Tab A7 LTE 2022 UNISOC T618, ARM Mali-G52 MP2, 32 GB eMMC Flash

Lenovo Tab M10 Gen 3 UNISOC T610, ARM Mali-G52 MP2, 64 GB eMMC Flash

Blackview Tab 13 Mediatek Helio G85, ARM Mali-G52 MP2, 128 GB eMMC Flash

Average UNISOC T616

Average of class Tablet

The ARM Mali-G57 MP1 GPU only features one computing core, which doesn't give this graphics solution a lot to work with when playing demanding games in particular. Even 3D benchmarks cannot be run smoothly at 30 fps at a resolution of 1080p — at 1440p or 4K, you can only expect a few frames per second.

3DMark: Wild Life Extreme Unlimited | Wild Life Extreme | Wild Life Unlimited Score | Wild Life Score | 2560x1440 Sling Shot Extreme (ES 3.1) Unlimited | 2560x1440 Sling Shot Extreme (ES 3.1) Unlimited Graphics | 2560x1440 Sling Shot Extreme (ES 3.1) Unlimited Physics
GFXBench (DX / GLBenchmark) 2.7: T-Rex Onscreen | 1920x1080 T-Rex Offscreen
GFXBench 3.0: on screen Manhattan Onscreen OGL | 1920x1080 1080p Manhattan Offscreen
GFXBench 3.1: on screen Manhattan ES 3.1 Onscreen | 1920x1080 Manhattan ES 3.1 Offscreen
GFXBench: on screen Car Chase Onscreen | 1920x1080 Car Chase Offscreen | on screen Aztec Ruins High Tier Onscreen | 2560x1440 Aztec Ruins High Tier Offscreen | on screen Aztec Ruins Normal Tier Onscreen | 1920x1080 Aztec Ruins Normal Tier Offscreen | 3840x2160 4K Aztec Ruins High Tier Offscreen

3DMark / Wild Life Extreme Unlimited
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash	191 Points +52%
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	185 Points +47%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	132 Points +5%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	127 Points +1%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	126 Points

3DMark / Wild Life Extreme
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash	193 Points +50%
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	189 Points +47%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	135 Points +5%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	129 Points
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	128 Points -1%

3DMark / Wild Life Unlimited Score
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash	757 Points +60%
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	722 Points +52%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	522 Points +10%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	476 Points 0%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	474 Points

3DMark / Wild Life Score
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash	761 Points +61%
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	721 Points +52%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	524 Points +11%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	477 Points +1%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	474 Points

3DMark / Sling Shot Extreme (ES 3.1) Unlimited
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	1527 Points +40%
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash	1441 Points +32%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	1146 Points +5%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	1106 Points +2%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	1089 Points

3DMark / Sling Shot Extreme (ES 3.1) Unlimited Graphics
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	1332 Points +44%
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash	1281 Points +38%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	979 Points +6%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	937 Points +1%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	927 Points

3DMark / Sling Shot Extreme (ES 3.1) Unlimited Physics
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	3124 Points +12%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	3001 Points +7%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	2848 Points +2%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	2798 Points
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash	2564 Points -8%

GFXBench (DX / GLBenchmark) 2.7 / T-Rex Onscreen
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	38 fps +65%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	31 fps +35%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	23 fps 0%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	23 fps

GFXBench (DX / GLBenchmark) 2.7 / T-Rex Offscreen
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	41 fps +71%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	32 fps +33%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	24 fps 0%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	24 fps

GFXBench 3.0 / Manhattan Onscreen OGL
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	24 fps +60%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	19 fps +27%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	16 fps +7%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	15 fps

GFXBench 3.0 / 1080p Manhattan Offscreen
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	26 fps +63%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	20 fps +25%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	16 fps 0%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	16 fps

GFXBench 3.1 / Manhattan ES 3.1 Onscreen
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	14 fps +51%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	11 fps +18%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	9.7 fps +4%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	9.3 fps

GFXBench 3.1 / Manhattan ES 3.1 Offscreen
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	15 fps +55%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	12 fps +24%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	9.7 fps 0%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	9.7 fps

GFXBench / Car Chase Onscreen
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	8.8 fps +57%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	6.4 fps +14%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	5.8 fps +4%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	5.6 fps

GFXBench / Car Chase Offscreen
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	9.7 fps +64%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	6.6 fps +12%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	5.9 fps 0%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	5.9 fps

GFXBench / Aztec Ruins High Tier Onscreen
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	5.9 fps +59%
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash	5 fps +35%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	4.5 fps +22%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	3.8 fps +3%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	3.7 fps

GFXBench / Aztec Ruins High Tier Offscreen
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	3.7 fps +68%
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash	3.3 fps +50%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	2.7 fps +23%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	2.2 fps 0%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	2.2 fps

GFXBench / Aztec Ruins Normal Tier Onscreen
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	9.4 fps +62%
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash	7.5 fps +29%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	7.4 fps +28%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	6 fps +3%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	5.8 fps

GFXBench / Aztec Ruins Normal Tier Offscreen
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	10 fps +64%
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash	8.4 fps +38%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	7.8 fps +28%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	6.1 fps 0%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	6.1 fps

GFXBench / 4K Aztec Ruins High Tier Offscreen
Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash	1.6 fps +68%
Blackview Tab 13 Mali-G52 MP2, Helio G85, 128 GB eMMC Flash	1.4 fps +47%
Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash	1.2 fps +26%
Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	0.98 fps +3%
Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash	0.95 fps

When browsing the internet, the Teclast T40 Air seems to be quite agile, although you may have to factor in some loading times when calling up pages. The laptop achieved good benchmark results for this class, but this may well have to do with its more up-to-date browser version.

Jetstream 2 - Total Score
Average of class Tablet (19.9 - 236, n=59, last 2 years)	84.9 Points +59%
Teclast M50 Pro (Chrome 117.0.5938.60)	57.176 Points +7%
Teclast T40 Air (Chrome 119)	53.27 Points
Average UNISOC T616 (45.4 - 57.2, n=5)	52 Points -2%
Samsung Galaxy Tab A7 LTE 2022 (Chrome 112)	49.8 Points -7%
Lenovo Tab M10 Gen 3 (Chrome 111)	46.85 Points -12%

WebXPRT 4 - Overall
Average of class Tablet (21 - 227, n=57, last 2 years)	85.7 Points +48%
Samsung Galaxy Tab A7 LTE 2022 (Chrome 112)	58 Points 0%
Teclast T40 Air (Chrome 119)	58 Points
Teclast M50 Pro (Chrome 117.0.5938.60)	57 Points -2%
Average UNISOC T616 (45 - 60, n=4)	55 Points -5%
Lenovo Tab M10 Gen 3 (Chrome 111)	53 Points -9%

WebXPRT 3 - Overall
Average of class Tablet (34 - 342, n=42, last 2 years)	120.7 Points +51%
Samsung Galaxy Tab A7 LTE 2022 (Chrome 112)	93 Points +16%
Teclast M50 Pro (Chrome 117.0.5938.60)	86 Points +8%
Teclast T40 Air (Chrome 119)	80 Points
Average UNISOC T616 (68 - 86, n=3)	78 Points -2%

Speedometer 2.0 - Result
Average of class Tablet (14.7 - 376, n=52, last 2 years)	77.2 runs/min +91%
Teclast M50 Pro (Chrome 117.0.5938.60)	46.6 runs/min +15%
Teclast T40 Air (Chrome 119)	40.5 runs/min
Average UNISOC T616 (34.4 - 46.6, n=5)	40.4 runs/min 0%
Samsung Galaxy Tab A7 LTE 2022 (Chome 112)	38.16 runs/min -6%
Lenovo Tab M10 Gen 3 (Chome 111)	34.43 runs/min -15%

Octane V2 - Total Score
Average of class Tablet (2672 - 74614, n=72, last 2 years)	23028 Points +59%
Teclast M50 Pro (Chrome 117.0.5938.60)	14855 Points +2%
Teclast T40 Air (Chrome 119)	14522 Points
Average UNISOC T616 (12141 - 15304, n=5)	14092 Points -3%
Samsung Galaxy Tab A7 LTE 2022 (Chrome 112)	12681 Points -13%
Lenovo Tab M10 Gen 3 (Chrome 111)	11952 Points -18%
Blackview Tab 13 (Chrome 109)	11712 Points -19%

Mozilla Kraken 1.1 - Total
Average of class Tablet (451 - 34733, n=59, last 2 years)	3209 ms * -18%
Lenovo Tab M10 Gen 3 (Chrome 111)	3075.1 ms * -14%
Samsung Galaxy Tab A7 LTE 2022 (Chrome 112)	2895.3 ms * -7%
Average UNISOC T616 (2531 - 3014, n=4)	2711 ms * -0%
Teclast T40 Air (Chrome 119)	2708.7 ms *
Teclast M50 Pro (Chrome 117.0.5938.60)	2530.7 ms * +7%

* ... smaller is better

The Teclast T40 Air might have a lot of storage, but its eMMC flash certainly isn't the fastest. However, you will hardly find anyone who does it better in this price class.

Subsequently, data transfers and loading times might take a little while.

	Teclast T40 Air	Teclast M50 Pro	Samsung Galaxy Tab A7 LTE 2022	Lenovo Tab M10 Gen 3	Blackview Tab 13	Average 256 GB eMMC 5.1 Flash	Average of class Tablet
AndroBench 3-5		2%	-25%	10%	-7%	4%	143%
Sequential Read 256KB	270.7	257.8 -5%	249 -8%	277.2 2%	289.1 7%	266 ?(240 - 297, n=4) -2%	850 ?(163 - 3414, n=68, last 2 years) 214%
Sequential Write 256KB	246.2	225.22 -9%	83 -66%	210.4 -15%	173.1 -30%	239 ?(225 - 253, n=4) -3%	532 ?(78.2 - 2528, n=68, last 2 years) 116%
Random Read 4KB	76.3	91.95 21%	67.3 -12%	105.1 38%	79 4%	86.2 ?(76.3 - 100, n=4) 13%	167 ?(18.4 - 451, n=68, last 2 years) 119%
Random Write 4KB	67.8	68.13 0%	58.8 -13%	78.5 16%	63.1 -7%	73.9 ?(67.5 - 92.2, n=4) 9%	150.8 ?(8.23 - 503, n=68, last 2 years) 122%

Games – Wobbly 30 fps in 3D games

Playing simple games is no problem on the Teclast T40 Pro and most games can be downloaded from the Google Play Store — you aren't faced with any limitations as the owner of this tablet.

However, you can only expect 30 fps on most games and even so, it isn't the smoothest, to say the least. If you don't have very high expectations or if you only play 2D games anyway, then the T40 Air will be good enough. For fun 3D gaming, you will need better graphics power.

We would like to publish detailed fps rates, however, the tablet refuses to work correctly with the software from GameBench.

No graph data

Emissions – The T40 Air barely gets warm

Temperature

The tablet's temperatures rise to a maximum of 33.9 °C on the front after prolonged use, which is only slightly noticeable. This means that you should have no problems holding the tablet in your hand even on hot days and when running demanding apps.

The 3DMark stress tests also give the all-clear: the processor is not throttled when the tablet is subjected to demanding tasks for a longer period of time. At most, there are slight fluctuations in performance, but they always return to the starting level.

Max. Load

Idle


30.4 °C 87 F	33.9 °C 93 F	28.4 °C 83 F
30.2 °C 86 F	29.1 °C 84 F	27.6 °C 82 F
29.4 °C 85 F	27.8 °C 82 F	26.7 °C 80 F

Maximum: 33.9 °C = 93 F
Average: 29.3 °C = 85 F


28.4 °C 83 F	32.6 °C 91 F	30.4 °C 87 F
28 °C 82 F	29.9 °C 86 F	29.5 °C 85 F
26.8 °C 80 F	28.5 °C 83 F	28.8 °C 84 F

Maximum: 32.6 °C = 91 F
Average: 29.2 °C = 85 F

Power Supply (max.) 40.6 °C = 105 F | Room Temperature 21 °C = 70 F | Fluke t3000FC (calibrated), Voltcraft IR-260

(+) The average temperature for the upper side under maximal load is 29.3 °C / 85 F, compared to the average of 30 °C / 86 F for the devices in the class Tablet.
(+) The maximum temperature on the upper side is 33.9 °C / 93 F, compared to the average of 33.8 °C / 93 F, ranging from 20.7 to 53.2 °C for the class Tablet.
(+) The bottom heats up to a maximum of 32.6 °C / 91 F, compared to the average of 33.3 °C / 92 F
(+) In idle usage, the average temperature for the upper side is 23.6 °C / 74 F, compared to the device average of 30 °C / 86 F.

3DMark Wild Life Stress Test

Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash; Wild Life Stress Test Stability; 0.0.0.0: Ø2.85 (2.84-2.86)

Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash; Wild Life Stress Test Stability; 0.0.0.0: Ø2.87 (2.86-2.87)

Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash; Wild Life Stress Test Stability; 0.0.0.0: Ø4.35 (4.34-4.36)

Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash; Wild Life Stress Test Stability; 0.0.0.0: Ø3.14 (3.13-3.16)

Teclast T40 Air Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash; Wild Life Extreme Stress Test; 1.1.4.1: Ø0.775 (0.732-0.818)

Teclast M50 Pro Mali-G57 MP1, T616, 256 GB eMMC 5.1 Flash; Wild Life Extreme Stress Test; 1.1.4.1: Ø0.783 (0.733-0.822)

Samsung Galaxy Tab A7 LTE 2022 Mali-G52 MP2, T618, 32 GB eMMC Flash; Wild Life Extreme Stress Test; 1.1.0.2: Ø1.117 (1.11-1.127)

Lenovo Tab M10 Gen 3 Mali-G52 MP2, T610, 64 GB eMMC Flash; Wild Life Extreme Stress Test; 1.1.0.2: Ø0.799 (0.789-0.809)

3DMark
Wild Life Extreme Stress Test
Samsung Galaxy Tab A7 LTE 2022	98.5 (1.11^min - 1.127^max) % +10%
Lenovo Tab M10 Gen 3	97.5 (0.789^min - 0.809^max) % +9%
Teclast T40 Air	89.6 (0.732^min - 0.818^max) %
Teclast M50 Pro	89.2 (0.733^min - 0.822^max) % 0%
Wild Life Stress Test Stability
Teclast M50 Pro	99.6 (2.86^min - 2.87^max) % +1%
Samsung Galaxy Tab A7 LTE 2022	99.4 (4.34^min - 4.36^max) % 0%
Lenovo Tab M10 Gen 3	99.3 (3.13^min - 3.16^max) % 0%
Teclast T40 Air	99.1 (2.84^min - 2.86^max) %

Legend

Teclast T40 Air UNISOC T616, ARM Mali-G57 MP1, 256 GB eMMC 5.1 Flash

Teclast M50 Pro UNISOC T616, ARM Mali-G57 MP1, 256 GB eMMC 5.1 Flash

Samsung Galaxy Tab A7 LTE 2022 UNISOC T618, ARM Mali-G52 MP2, 32 GB eMMC Flash

Lenovo Tab M10 Gen 3 UNISOC T610, ARM Mali-G52 MP2, 64 GB eMMC Flash

Blackview Tab 13 Mediatek Helio G85, ARM Mali-G52 MP2, 128 GB eMMC Flash

Speakers

The speakers on the sides of the Teclast tablet produce a decent sound that is not too treble-heavy, even at the highest volume. Of course, the tablet can't compete with a real hi-fi system, but listening to some music or playing movie soundtracks works quite well.

External speakers or headphones can also be connected via the 3.5-mm audio jack or Bluetooth. This works without any problems and the most necessary audio codecs for wireless playback are available, including AAC, SBC, aptX, aptX HD and LDAC.

Frequency diagram (checkboxes can be checked and unchecked to compare devices)

Teclast T40 Air audio analysis

(+) | speakers can play relatively loud (85.2 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 29.8% lower than median
(±) | linearity of bass is average (10.5% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 5.1% higher than median
(+) | mids are linear (6.2% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.6% away from median
(+) | highs are linear (4.3% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (21.1% difference to median)
Compared to same class
» 56% of all tested devices in this class were better, 4% similar, 39% worse
» The best had a delta of 7%, average was 23%, worst was 129%
Compared to all devices tested
» 53% of all tested devices were better, 7% similar, 40% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Blackview Tab 13 audio analysis

(+) | speakers can play relatively loud (82.8 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 27.2% lower than median
(±) | linearity of bass is average (12% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 7.8% higher than median
(+) | mids are linear (5.5% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6.3% higher than median
(+) | highs are linear (5.8% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (28.2% difference to median)
Compared to same class
» 83% of all tested devices in this class were better, 3% similar, 14% worse
» The best had a delta of 7%, average was 23%, worst was 129%
Compared to all devices tested
» 83% of all tested devices were better, 3% similar, 14% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Power management – Big battery leads to long runtimes

Power consumption

Overall, the Teclast T40 Air requires relatively little power for its tasks, especially when compared to the rest of the class. Its maximum consumption at full load is 8.4 watts.

The tablet can be charged at a maximum of 18 watts. Due to its very powerful battery, it takes just over 2 hours to fully recharge the empty battery.

Power Consumption

Off / Standby	0.1 / 0.2 Watt
Idle	1.2 / 1.3 / 1.5 Watt
Load	5.6 / 8.4 Watt


Key: min: , med: , max: Metrahit Energy Currently we use the Metrahit Energy, a professional single phase power quality and energy measurement digital multimeter, for our measurements. Find out more about it here. All of our test methods can be found here.

	Teclast T40 Air 7200 mAh	Teclast M50 Pro 6000 mAh	Samsung Galaxy Tab A7 LTE 2022 7040 mAh	Lenovo Tab M10 Gen 3 5100 mAh
Power Consumption		-4%	-10%	-46%
Idle Minimum *	1.2	1.1 8%	1.4 -17%	1.9 -58%
Idle Average *	1.3	1.4 -8%	1.6 -23%	2.1 -62%
Idle Maximum *	1.5	1.9 -27%	2 -33%	2.5 -67%
Load Average *	5.6	5.5 2%	4.2 25%	7.6 -36%
Load Maximum *	8.4	8 5%	8.7 -4%	9 -7%

* ... smaller is better

Power consumption: Geekbench (150 cd/m²)

Teclast T40 Air: Ø8.44 (5.61-11)

Power consumption: GFXBench (150 cd/m²)

Teclast T40 Air; 1920x1080 Aztec Ruins Normal Offscreen: Ø6.79 (6.51-7.29)

Teclast T40 Air; Idle 150cd/m2: Ø1.264 (1.177-1.353)

Runtimes

Its battery has a capacity of 7,200 mAh and subsequently, clearly beats most comparable devices. It is therefore no wonder that the Teclast T40 Air's runtimes are also very long: In our WLAN test, it achieved 15:18 hours, which should easily get you through the day with normal use.

If you like to play a lot of games, the battery will run out after 4:22 hours at the earliest. This means that even longer gaming sessions are no problem.

Battery Runtime

Idle (without WLAN, min brightness)		46h 45min
WiFi Websurfing		15h 18min
Big Buck Bunny H.264 1080p		17h 00min
Load (maximum brightness)		4h 22min

	Teclast T40 Air 7200 mAh	Teclast M50 Pro 6000 mAh	Samsung Galaxy Tab A7 LTE 2022 7040 mAh	Lenovo Tab M10 Gen 3 5100 mAh	Blackview Tab 13 7280 mAh
Battery Runtime		-34%	-4%	-14%	1%
Reader / Idle	2805	1660 -41%	2869 2%	1952 -30%
H.264	1020	579 -43%	942 -8%	1002 -2%
WiFi v1.3	918	555 -40%	874 -5%	861 -6%	926 1%
Load	262	233 -11%	250 -5%	213 -19%

Pros

+ good stamina

+ lots of storage and RAM

+ slim metal case

+ fast microSD slot

+ can be used with mobile data

+ stock Android 13

+ no PWM

+ decent speakers

Cons

- inaccurate location services

- very weak camera system

- display has a strong blue tint

- screen too dim to be used outside

- insecure update situation

Verdict – Generous connectivity, but not without its weaknesses

Of course, you can identify quite a few points of criticism on the Teclast T40 Air: Its screen's strong blue tint, the tablet's inaccurate location services and its very weak cameras, to name just a few.

At the same time, the device boasts many positive features: It has a lot of storage and RAM, can be used with mobile data, features a microSD slot, and — for fans of analogue headphones — it even has a 3.5-mm audio jack.

In addition, its massive battery results in very good runtimes, without the T40 Air feeling too heavy or bulky.

As the tablet can often be found on sale, and its dim screen and poor locating qualities shouldn't be too big a deal if you intend on using the tablet inside, the Teclast T40 Air might still actually be worth considering.

The Teclast T40 Air impresses with its stamina, mobile data support and generous storage. However, if you are looking for a bright display for outdoor use, then you just might want to look elsewhere.

We have a few alternative options for you to take a look at: The Teclast M50 Pr is more portable and a bit lighter — but it doesn't have as good a battery life. Samsung's Galaxy Tab A7 LTE 2022 delivers better performance, but only a limited amount of storage.

Price and availability

The Teclast T40 Air can currently be found on Amazon for a promotional price of US$151.99.

Teclast T40 Air - 2023-11-22 11/22/2023 v7
Florian Schmitt

Chassis

79 / 98 → 81%

Keyboard

71 / 80 → 89%

Pointing Device

83%

Connectivity

46 / 70 → 66%

Weight

84 / 40-88 → 91%

Battery

91%

Display

76%

Games Performance

11 / 78 → 14%

Application Performance

60 / 92 → 65%

Temperature

95%

Noise

100%

Audio

70 / 91 → 77%

Camera

45 / 85 → 53%

Average

70%

80%

Tablet - Weighted Average

Transparency

The present review sample was made available to the author as a loan by the manufacturer or a shop for the purposes of review. The lender had no influence on this review, nor did the manufacturer receive a copy of this review before publication. There was no obligation to publish this review.

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Editor of the original article: Florian Schmitt - Managing Editor Mobile - 1136 articles published on Notebookcheck since 2009

I initially wrote about gaming laptops when I joined Notebookcheck in 2009. I was then involved with the setup of the comparison portal Notebookinfo and worked with social media concepts for large companies like BMW and Adidas, while also returning to work for Notebookcheck in 2012. Nowadays, I focus on smartphones, tablets, and future technologies. Since 2018 I have been Managing Editor for mobile device reviews, working alongside my colleague Daniel Schmidt.

contact me via: @FloSchmi26, LinkedIn, Xing

Translator: Daisy Dickson - Translator - 215 articles published on Notebookcheck since 2023

Originally from Scotland, I grew up and lived in Germany until I completed my high school qualifications before moving back to Scotland to complete my university studies. Growing up bilingual led me to form a close relationship with the English and German languages, often working in the fields of teaching and translation. Most of my childhood was shaped by playing around on new consoles, computers and gadgets and getting to grips with the new craze of the internet and smartphones. This interest has stayed with me well into adulthood. Nowadays, I live in Glasgow and work as a freelance translator and digital media coordinator. I have been translating for Notebookcheck since early 2023.

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Reviews > Teclast T40 Air tablet review – Very good runtimes despite not being too expensive

Florian Schmitt, 2023-11-22 (Update: 2023-11-22)