Verdict on the Redmi Note 15 5G
The Redmi Note 15 5G is a strong overall package within the affordable mid-range. Its extremely bright 120 Hz AMOLED display, very good battery runtimes, sturdy IP65-rated housing and long-term update promise up to Android 19 make it practical for everyday use and relatively future proof. At the same time, the camera, speakers, connectivity limitations such as the absence of eSIM and Vo5G, and the ad-heavy software fall clearly short of the ideal. As a result, the phone comes across more as a rational long-distance runner than a true multimedia recommendation.
Compared with the nearly identical Poco M8 5G, the Redmi justifies its higher price with a more versatile camera setup. Users who prioritise display quality, battery life and long-term software support will find the stronger option here, while demanding photo, video and audio users are likely to be happier with competitors such as Samsung's Galaxy A series or models from Nothing.
Pros
Cons
Price and availability
The Redmi Note 15 5G has an RRP of 280 euros for the 6 GB and 128 GB model and 300 euros for the 8 GB and 256 GB version. It is sold directly through the Xiaomi online store.
Prices are lower at retail. At the time of testing, the 128 GB model was already available for 219 euros from Coolblue and Galaxus, while the 256 GB variant was being offered for 269 euros by Alternate and again by Galaxus.
Pricing, availability and network features may differ depending on the region. The information above refers to the European market and may not apply in other areas such as North America.
Table of Contents
- Verdict on the Redmi Note 15 5G
- Specifications: Xiaomi Redmi Note 15 5G
- Case: robust construction designed for long smartphone life
- Features: Redmi Note 15 5G offered in two storage variants
- Software: Redmi Note 15 5G will receive updates up to Android 19
- Communication and GNSS: Redmi Note 15 5G with single band GNSS and ac WiFi
- Telephony and call quality
- Cameras: solid setup with limited flexibility
- Accessories and warranty: Redmi Note 15 5G with optional Xiaomi Care
- Input devices and operation: optical fingerprint sensor in the Xiaomi handset
- Display: eye friendly panel with extreme brightness
- Performance: faster thanks to an older Snapdragon
- Gaming: best avoided when things get hectic
- Emissions: Redmi smartphone with stable performance
- Battery life: 5,520 mAh inside the Redmi Note 15 5G
- Notebookcheck overall rating
- Possible alternatives at a glance
The Xiaomi Redmi Note 15 5G succeeds last year's Redmi Note 14 5G and shows improvements in several key areas, including peak display brightness, battery capacity, video capabilities and IP rating.
Its sibling model, the Poco M8 5G, appears almost identical at first glance. However, the Redmi variant features a modified camera setup that sets it slightly apart.
Which of the two ultimately proves the better choice, and whether it can pose a real challenge to the established front-runner from Samsung remains the key question.
Specifications: Xiaomi Redmi Note 15 5G
Case: robust construction designed for long smartphone life
The Redmi Note 15 5G is available in black and glacier blue. Compared with its predecessor, which measured 7.99 millimetres, the new model is even slimmer at a nominal 7.35 millimetres. Our own measurement shows 7.4 millimetres, rising to 10.75 millimetres at the highest point of the camera module. Thanks to the gently curved sides, the Xiaomi handset feels narrower than it actually is and sits comfortably in the hand.
The front is protected by an unspecified high-strength glass, while the frame and back are made of plastic. Under the label Titan Tough, Xiaomi markets the phone as particularly durable. This applies not only to its IP65 rating but also to its claimed drop resistance. According to the manufacturer, it can survive falls from 1.7 metres onto marble surfaces without damage. It is also resistant to extreme temperatures between minus 40 and plus 70 degrees Celsius and is said to offer improved scratch resistance. In several waist-height drop tests during our review, the Redmi Note 15 5G remained completely unscathed.
Build quality is good overall. Gaps are mostly even, although close inspection reveals that the back panel does not always sit perfectly flush with the frame. The smartphone feels robust during torsion attempts, although it produces noticeable creaking.
Features: Redmi Note 15 5G offered in two storage variants
The Redmi Note 15 5G from Xiaomi is available with either 6 GB of RAM and 128 GB of internal storage or with 8 GB and 256 GB. Both versions support storage expansion via a microSD card. NFC and an infrared blaster are also included.
Unlike the Redmi Note 14 5G, the current model no longer provides a headphone jack. The card tray is a hybrid slot, meaning it can hold either two nano SIM cards or one nano SIM and a microSD card. Support for eSIM is not available.
microSD card reader
The microSD card slot in the Redmi Note 15 5G delivers only middling transfer rates in the copy test. However, performance in the Cross Platform Disk Test is solid, particularly when reading data.
| SD Card Reader - average JPG Copy Test (av. of 3 runs) | |
| Motorola Moto G86 Power (Angelbird V60) | |
| Average of class Smartphone (5.72 - 58.9, n=72, last 2 years) | |
| Xiaomi Poco M8 5G (Angelbird AV Pro V60) | |
| Xiaomi Redmi Note 14 5G (Angelbird AV Pro V60) | |
| Xiaomi Redmi Note 15 5G (Angelbird AV Pro V60) | |
Cross Platform Disk Test (CPDT)
Software: Redmi Note 15 5G will receive updates up to Android 19
The Redmi Note 15 5G ships with Google Android 15 and HyperOS 2.0 from Xiaomi. According to the manufacturer, it is scheduled to receive version updates up to Android 19, along with a total of six years of security patches, running until January 2032.
The Redmi handset supports features such as Xiaomi Interconnectivity, although HyperAI is not included. The Gallery app does offer a few AI tools, including object removal and sky replacement.
As in previous generations, Xiaomi preinstalls a number of third party apps, although these can be uninstalled. Advertising that is integrated into the system is more prominent than on more expensive models. An article on the Xiaomi website explains how users can remove or limit these ads.
Sustainability
Xiaomi does not provide specific information regarding sustainability aspects for the Redmi Note 15 5G. The smartphone arrives in a cardboard box but is sealed in a plastic sleeve.
The first replacement parts are already listed on Xiaomi’s website and can be purchased there. Repair guides are also expected to become available shortly.
Communication and GNSS: Redmi Note 15 5G with single band GNSS and ac WiFi
In terms of connectivity features, the Redmi Note 15 5G offers only the essentials: ac WiFi, NFC, Bluetooth 5.1 and 5G with good frequency band coverage.
Reception quality is good in mobile networks as well as in WiFi. Transfer speeds to our reference router, the Asus ROG Rapture GT AXE11000, are not particularly high but remain stable throughout testing.
| Networking | |
| Xiaomi Redmi Note 15 5G | |
| iperf3 transmit AXE11000 | |
| iperf3 receive AXE11000 | |
| Xiaomi Poco M8 5G | |
| iperf3 transmit AXE11000 | |
| iperf3 receive AXE11000 | |
| Samsung Galaxy A36 5G | |
| iperf3 transmit AXE11000 | |
| iperf3 receive AXE11000 | |
| Xiaomi Redmi Note 14 5G | |
| iperf3 transmit AXE11000 | |
| iperf3 receive AXE11000 | |
| Nothing Phone (3a) | |
| iperf3 transmit AXE11000 | |
| iperf3 receive AXE11000 | |
| Motorola Moto G86 Power | |
| iperf3 transmit AXE11000 | |
| iperf3 receive AXE11000 | |
| Average 802.11 a/b/g/n/ac | |
| iperf3 transmit AXE11000 | |
| iperf3 receive AXE11000 | |
| Average of class Smartphone | |
| iperf3 transmit AXE11000 | |
| iperf3 receive AXE11000 | |
Only single band GNSS with four satellite systems is available for positioning. Even so, satellite fixation outdoors is achieved quickly and with good accuracy.
During a bike ride, we compared the Xiaomi smartphone with a fitness smartwatch from Garmin. The recorded route is mostly accurate, although some deviations from the actual path are visible.
Telephony and call quality
With its hybrid SIM slot, the Redmi Note 15 5G can use two SIM cards, although only if the microSD card is omitted. An eSIM is unfortunately not supported. WiFi calling and VoLTE are available, but Vo5G is not.
Call quality is decent when the phone is held to the ear, although loud ambient noise is only inadequately filtered out. The speaker can be used comfortably in quiet environments, but its microphone range is limited and slight echoing is noticeable.
Offline communication via Xiaomi services is not supported. The virtual proximity sensor works reliably in everyday use, which has not always been the case with other models.
Cameras: solid setup with limited flexibility
The front camera offers a high megapixel count but does not support pixel binning. It can capture reasonably appealing images, although the dynamic range is fairly narrow and noticeable noise appears in low light. Video recording is limited to Full HD at 30 frames per second.
The main rear camera uses a generous 108 megapixel sensor and provides optical image stabilization. Images are sharpened quite aggressively, which reduces fine detail, although color balance is generally well controlled. Bright areas tend to be overexposed.
The additional ultra-wide-angle camera is certainly a better choice than the depth sensor on the Poco M8, but image quality remains unconvincing. Details lack definition and depth of field is shallow.
Zoom is entirely digital, up to a 20 times magnification. Up to around three times zoom, results are acceptable. Beyond that, image areas break up into visible pixel clusters and the OIS also reaches its limits.
Video recording with the main camera is available in 720p, 1080p or Ultra HD, although only at 30 frames per second.
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.
HauptkameraHauptkameraUltraweitwinkel5-facher ZoomLow-Light
Under controlled lighting conditions, the test chart remains reasonably sharp even toward the edges, although fine details appear blurred, including in the centre of the image.
Color reproduction is good overall, but saturated tones tend to be rendered with slightly excessive intensity.
Accessories and warranty: Redmi Note 15 5G with optional Xiaomi Care
The Redmi Note 15 5G comes with a USB cable (Type A to Type C), a SIM tool and a black silicone protective case. A compatible 45 watt power adapter can be purchased separately from Xiaomi.
The smartphone includes a global 12 month manufacturer warranty. This does not affect any statutory warranty obligations provided by the retailer. Xiaomi Care is also available for the Note 15, priced at 39 euros for two years of coverage or 59 euros when theft protection is included.
Input devices and operation: optical fingerprint sensor in the Xiaomi handset
The capacitive touchscreen comes with a pre-applied screen protector and offers good gliding properties, with inputs reliably detected across the entire surface.
An optical fingerprint sensor is integrated into the display. It unlocks the Redmi Note 15 5G quickly and delivers reliable recognition rates. Facial recognition via the front camera is less secure but works very quickly in daylight.
The ERM vibration motor can be adjusted in three levels. It is powerful and clearly audible, although its feedback feels somewhat soft. Various gesture controls are supported to streamline operation, and a one-handed mode is also available.
Display: eye friendly panel with extreme brightness
The 6.77 inch AMOLED display of the Redmi Note 15 5G from Xiaomi supports a refresh rate of up to 120 Hz, which the system can automatically reduce to as low as 60 Hz. HDR is not supported.
Our brightness measurements show that the panel reaches very high luminance levels when a reduced white area is analysed. Under a full screen white pattern, brightness is closer to average. When adjusted manually, the display reaches up to 599 cd/m². The sunlight mode found in the settings does not increase this value further.
The display uses high frequency PWM dimming at up to 3,840 Hz, which should make the device more comfortable for users sensitive to flicker. However, we also record a comparatively low frequency of 60 Hz, which is likely attributable to BFI.
| |||||||||||||||||||||||||
Brightness Distribution: 95 %
Center on Battery: 979 cd/m²
Contrast: ∞:1 (Black: 0 cd/m²)
ΔE ColorChecker Calman: 1.3 | ∀{0.5-29.43 Ø4.76}
ΔE Greyscale Calman: 1.6 | ∀{0.09-98 Ø5}
95.6% sRGB (Calman 2D)
Gamma: 2.23
CCT: 6688 K
| Xiaomi Redmi Note 15 5G AMOLED, 2392x1080, 6.8" | Xiaomi Poco M8 5G AMOLED, 2392x1080, 6.8" | Samsung Galaxy A36 5G Super AMOLED, 2340x1080, 6.7" | Xiaomi Redmi Note 14 5G AMOLED, 2400x1080, 6.7" | Nothing Phone (3a) AMOLED, 2392x1080, 6.8" | Motorola Moto G86 Power OLED, 2712x1220, 6.7" | |
|---|---|---|---|---|---|---|
| Screen | 6% | -7% | -12% | -55% | 4% | |
| Brightness middle (cd/m²) | 979 | 953 -3% | 1127 15% | 1147 17% | 1287 31% | 1429 46% |
| Brightness (cd/m²) | 969 | 954 -2% | 1137 17% | 1146 18% | 1274 31% | 1357 40% |
| Brightness Distribution (%) | 95 | 95 0% | 98 3% | 96 1% | 97 2% | 91 -4% |
| Black Level * (cd/m²) | ||||||
| Colorchecker dE 2000 * | 1.3 | 1 23% | 1.8 -38% | 1.6 -23% | 1.9 -46% | 1.4 -8% |
| Colorchecker dE 2000 max. * | 2.6 | 2.3 12% | 2.8 -8% | 3.7 -42% | 8.7 -235% | 3.21 -23% |
| Greyscale dE 2000 * | 1.6 | 1.5 6% | 2.1 -31% | 2.3 -44% | 3.4 -113% | 2 -25% |
| Gamma | 2.23 99% | 2.22 99% | 2.11 104% | 2.27 97% | 2.26 97% | 2.251 98% |
| CCT | 6688 97% | 6694 97% | 6466 101% | 6368 102% | 7072 92% | 6364 102% |
* ... smaller is better
| Display / APL18 Peak Brightness | |
| Xiaomi Redmi Note 15 5G | |
| Samsung Galaxy A36 5G | |
| Nothing Phone (3a) | |
| Xiaomi Redmi Note 14 5G | |
Screen Flickering / PWM (Pulse-Width Modulation)
| Screen flickering / PWM detected | 60 Hz Amplitude: 13.61 % Secondary Frequency: 3333 Hz |  | |
The display backlight flickers at 60 Hz (worst case, e.g., utilizing PWM) . The frequency of 60 Hz is very low, so the flickering may cause eyestrain and headaches after extended use. In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 8002 (minimum: 5 - maximum: 343500) Hz was measured. | |||
Measurement series with fixed zoom level and different brightness settings (The amplitude curve at minimum brightness looks flat, but this is due to the scaling. The info box shows the enlarged version of the amplitude at minimum brightness)
The display analysis with Calman confirms that the Redmi Note 15 5G has an accurate display when the standard color scheme is selected. Otherwise, the image is slightly cooler.
Display Response Times
| ↔ Response Time Black to White | ||
|---|---|---|
| 1.13 ms ... rise ↗ and fall ↘ combined | ↗ 0.5435 ms rise |  |
| ↘ 0.5845 ms fall | ||
| The screen shows very fast response rates in our tests and should be very well suited for fast-paced gaming. In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 5 % of all devices are better. This means that the measured response time is better than the average of all tested devices (20.1 ms). | ||
| ↔ Response Time 50% Grey to 80% Grey | ||
| 0.99 ms ... rise ↗ and fall ↘ combined | ↗ 0.43 ms rise |  |
| ↘ 0.5615 ms fall | ||
| The screen shows very fast response rates in our tests and should be very well suited for fast-paced gaming. In comparison, all tested devices range from 0.165 (minimum) to 636 (maximum) ms. » 3 % of all devices are better. This means that the measured response time is better than the average of all tested devices (31.4 ms). | ||
Outdoors, the Redmi smartphone leaves a good impression and remains easy to read in most lighting conditions. Only reflections on the glass can be distracting.
Even at shallow viewing angles, the Redmi Note 15 5G remains easy to read at all times. The image simply appears slightly darker and cooler from the side.
Performance: faster thanks to an older Snapdragon
While the Redmi Note 14 5G still relied on the MediaTek Dimensity 7025, the Note 15 5G uses the Qualcomm Snapdragon 6 Gen 3 from 2024, paired with 8 GB of LPDDR4x RAM. The switch pays off, as the current model delivers noticeably higher performance in both CPU tasks and overall system responsiveness.
| Antutu v11 - Score | |
| Average of class Smartphone (584158 - 4273120, n=19, last 2 years) | |
| Average Qualcomm Snapdragon 6 Gen 3 (857561 - 885038, n=2) | |
| Xiaomi Redmi Note 15 5G | |
| UL Procyon AI Inference for Android - Overall Score NNAPI | |
| Motorola Moto G86 Power | |
| Average of class Smartphone (3769 - 81594, n=130, last 2 years) | |
| Average Qualcomm Snapdragon 6 Gen 3 (8253 - 9416, n=4) | |
| Xiaomi Redmi Note 15 5G | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Xiaomi Redmi Note 14 5G | |
The integrated Adreno 710 is responsible for graphics calculations and likewise delivers a noticeable performance increase compared with last year's model.
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 | |
| Nothing Phone (3a) | |
| Motorola Moto G86 Power | |
| Samsung Galaxy A36 5G | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| 3DMark / Wild Life Extreme | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| 3DMark / Wild Life Unlimited Score | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Xiaomi Poco M8 5G | |
| Xiaomi Redmi Note 15 5G | |
| Motorola Moto G86 Power | |
| 3DMark / Steel Nomad Light Unlimited Score | |
| Nothing Phone (3a) | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| 3DMark / Steel Nomad Light Score | |
| Nothing Phone (3a) | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| GFXBench (DX / GLBenchmark) 2.7 / T-Rex Onscreen | |
| Samsung Galaxy A36 5G | |
| Motorola Moto G86 Power | |
| Nothing Phone (3a) | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| Xiaomi Redmi Note 14 5G | |
| GFXBench (DX / GLBenchmark) 2.7 / T-Rex Offscreen | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Xiaomi Poco M8 5G | |
| Xiaomi Redmi Note 15 5G | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 14 5G | |
| GFXBench 3.0 / Manhattan Onscreen OGL | |
| Samsung Galaxy A36 5G | |
| Nothing Phone (3a) | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| Xiaomi Redmi Note 14 5G | |
| GFXBench 3.0 / 1080p Manhattan Offscreen | |
| Nothing Phone (3a) | |
| Motorola Moto G86 Power | |
| Samsung Galaxy A36 5G | |
| Xiaomi Poco M8 5G | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Redmi Note 14 5G | |
| GFXBench 3.1 / Manhattan ES 3.1 Onscreen | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 14 5G | |
| GFXBench 3.1 / Manhattan ES 3.1 Offscreen | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| Xiaomi Redmi Note 14 5G | |
| GFXBench / Car Chase Onscreen | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 14 5G | |
| GFXBench / Car Chase Offscreen | |
| Nothing Phone (3a) | |
| Motorola Moto G86 Power | |
| Samsung Galaxy A36 5G | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| Xiaomi Redmi Note 14 5G | |
| GFXBench / Aztec Ruins High Tier Onscreen | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 14 5G | |
| GFXBench / Aztec Ruins High Tier Offscreen | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 14 5G | |
| GFXBench / Aztec Ruins Normal Tier Onscreen | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 14 5G | |
| GFXBench / Aztec Ruins Normal Tier Offscreen | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 14 5G | |
| GFXBench / 4K Aztec Ruins High Tier Offscreen | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 14 5G | |
In everyday use, the Redmi Note 15 5G delivers solid browsing performance, and we never felt limited by it. However, many competing devices are noticeably faster.
| Jetstream 2 - 2.0 Total Score | |
| Nothing Phone (3a) (Chrome 134.0.6998.135) | |
| Average of class Smartphone (23.8 - 358, n=143, last 2 years) | |
| Xiaomi Redmi Note 15 5G (Chrome 145) | |
| Motorola Moto G86 Power (Chrome 140) | |
| Samsung Galaxy A36 5G (Chrome 135) | |
| Average Qualcomm Snapdragon 6 Gen 3 (117 - 147.8, n=4) | |
| Xiaomi Poco M8 5G (Chrome 144.0.7559.132) | |
| Xiaomi Redmi Note 14 5G (Chrome 133.0.6943.49) | |
| Speedometer 2.0 - Result 2.0 | |
| Average of class Smartphone (15.2 - 643, n=113, last 2 years) | |
| Nothing Phone (3a) (Chrome 134.0.6998.135) | |
| Motorola Moto G86 Power (Chrome 140) | |
| Xiaomi Redmi Note 15 5G (Chrome 145) | |
| Average Qualcomm Snapdragon 6 Gen 3 (105 - 141, n=3) | |
| Xiaomi Redmi Note 14 5G (Chrome 133.0.6943.49) | |
| Samsung Galaxy A36 5G (Chrome 135) | |
| Speedometer 3 - Score 3.0 | |
| Average of class Smartphone (1.03 - 42.8, n=123, last 2 years) | |
| Nothing Phone (3a) (Chrome 134.0.6998.135) | |
| Xiaomi Redmi Note 15 5G (Chrome 145) | |
| Motorola Moto G86 Power (Chrome 140) | |
| Average Qualcomm Snapdragon 6 Gen 3 (6.94 - 9.32, n=3) | |
| Samsung Galaxy A36 5G (Chrome 135) | |
| Xiaomi Redmi Note 14 5G (Chrome 133.0.6943.49) | |
| WebXPRT 4 - Overall | |
| Nothing Phone (3a) (Chrome 134.0.6998.135) | |
| Average of class Smartphone (27 - 306, n=137, last 2 years) | |
| Samsung Galaxy A36 5G (Chrome 135) | |
| Average Qualcomm Snapdragon 6 Gen 3 (107 - 140, n=4) | |
| Motorola Moto G86 Power (Chrome 140) | |
| Xiaomi Redmi Note 15 5G (Chrome 145) | |
| Xiaomi Redmi Note 14 5G (Chrome 133.0.6943.49) | |
| Octane V2 - Total Score | |
| Average of class Smartphone (2228 - 126661, n=188, last 2 years) | |
| Nothing Phone (3a) (Chrome 134.0.6998.135) | |
| Xiaomi Redmi Note 15 5G (Chrome 145) | |
| Motorola Moto G86 Power (Chrome 140) | |
| Average Qualcomm Snapdragon 6 Gen 3 (37483 - 40500, n=4) | |
| Samsung Galaxy A36 5G (Chrome 135) | |
| Xiaomi Redmi Note 14 5G (Chrome 133.0.6943.49) | |
| Mozilla Kraken 1.1 - Total | |
| Average of class Smartphone (257 - 28190, n=149, last 2 years) | |
| Average Qualcomm Snapdragon 6 Gen 3 (978 - 1476, n=4) | |
| Xiaomi Redmi Note 14 5G (Chrome 133.0.6943.49) | |
| Motorola Moto G86 Power (Chrome 140) | |
| Samsung Galaxy A36 5G (Chrome 135) | |
| Xiaomi Redmi Note 15 5G (Chrome 145) | |
| Nothing Phone (3a) (Chrome 134.0.6998.135) | |
* ... smaller is better
The UFS 2.2 storage should in principle allow for high data transfer rates, but the SoC appears to be the limiting factor here.
| Xiaomi Redmi Note 15 5G | Xiaomi Poco M8 5G | Samsung Galaxy A36 5G | Xiaomi Redmi Note 14 5G | Nothing Phone (3a) | Motorola Moto G86 Power | Average 256 GB UFS 2.2 Flash | Average of class Smartphone | |
|---|---|---|---|---|---|---|---|---|
| AndroBench 3-5 | -5% | -37% | -2% | 8% | -4% | -8% | 73% | |
| Sequential Read 256KB (MB/s) | 911.87 | 1042.73 14% | 968.34 6% | 950.62 4% | 1031.34 13% | 982.2 8% | 910 ? 0% | 2140 ? 135% |
| Sequential Write 256KB (MB/s) | 867.34 | 893.75 3% | 166.77 -81% | 792.56 -9% | 1001.28 15% | 701.2 -19% | 739 ? -15% | 1841 ? 112% |
| Random Read 4KB (MB/s) | 222.77 | 146.5 -34% | 233.98 5% | 257.91 16% | 245.48 10% | 218.4 -2% | 225 ? 1% | 294 ? 32% |
| Random Write 4KB (MB/s) | 302.72 | 294.99 -3% | 62.58 -79% | 245.16 -19% | 285.24 -6% | 289.9 -4% | 248 ? -18% | 346 ? 14% |
Gaming: best avoided when things get hectic
The Adreno 710 sets clear limits in gaming. Casual titles pose no problem, but more demanding games may stutter or require reduced detail settings.
A good example is PUBG Mobile, which we analysed using GameBench. The game can be run in the Ultra HD preset, but the absence of features such as ray tracing means the visuals still do not reach the highest level.
Emissions: Redmi smartphone with stable performance
Temperature
Even though the Xiaomi Redmi Note 15 5G does not use a high-end SoC, the surface of the device warms up noticeably in some areas, reaching temperatures of up to 44 degrees Celsius. This is still unproblematic in everyday use.
In the 3DMark stress tests, the SoC never shows any significant throttling, and performance remains stable throughout.
(±) The maximum temperature on the upper side is 44 °C / 111 F, compared to the average of 35.2 °C / 95 F, ranging from 21.9 to 247 °C for the class Smartphone.
(±) The bottom heats up to a maximum of 40.8 °C / 105 F, compared to the average of 34 °C / 93 F
(+) In idle usage, the average temperature for the upper side is 28.4 °C / 83 F, compared to the device average of 32.9 °C / 91 F.
3DMark stress tests
| 3DMark | |
| Wild Life Stress Test Stability | |
| Xiaomi Redmi Note 15 5G | |
| Nothing Phone (3a) | |
| Samsung Galaxy A36 5G | |
| Xiaomi Poco M8 5G | |
| Wild Life Extreme Stress Test | |
| Nothing Phone (3a) | |
| Motorola Moto G86 Power | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
| Samsung Galaxy A36 5G | |
| Steel Nomad Light Stress Test Stability | |
| Nothing Phone (3a) | |
| Xiaomi Redmi Note 15 5G | |
| Xiaomi Poco M8 5G | |
Speakers
The dual speakers of the Redmi Note 15 5G are advertised as supporting Dolby Atmos, but their performance in testing is not particularly convincing. The sound lacks depth and body and comes across as unbalanced. It is adequate for calls and occasional short media playback, but not much more.
Audio output over USB-C or via Bluetooth is noticeably better. Bluetooth also offers a wide range of codec support, although Auracast is not available.
Xiaomi Redmi Note 15 5G audio analysis
(+) | speakers can play relatively loud (88.7 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 28.4% lower than median
(±) | linearity of bass is average (9.7% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | reduced mids - on average 10% lower than median
(±) | linearity of mids is average (7.4% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 4.7% away from median
(+) | highs are linear (6.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (22.1% difference to median)
Compared to same class
» 46% of all tested devices in this class were better, 7% similar, 47% worse
» The best had a delta of 11%, average was 35%, worst was 134%
Compared to all devices tested
» 63% of all tested devices were better, 6% similar, 30% worse
» The best had a delta of 4%, average was 24%, worst was 134%
Samsung Galaxy A36 5G audio analysis
(+) | speakers can play relatively loud (90.5 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 26.4% lower than median
(±) | linearity of bass is average (7.3% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | reduced mids - on average 6.1% lower than median
(+) | mids are linear (4.3% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3% away from median
(+) | highs are linear (1.8% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (17.9% difference to median)
Compared to same class
» 15% of all tested devices in this class were better, 8% similar, 76% worse
» The best had a delta of 11%, average was 35%, worst was 134%
Compared to all devices tested
» 36% of all tested devices were better, 8% similar, 56% worse
» The best had a delta of 4%, average was 24%, worst was 134%
Battery life: 5,520 mAh inside the Redmi Note 15 5G
Power consumption
The power consumption of the Redmi Note 15 5G is impressive, and in our controlled brightness tests it even manages to outperform the Samsung Galaxy A36.
The smartphone charges via cable at up to 45 watts, while wireless charging is not supported. A full charge takes a comparatively short 58 minutes, with 50 percent reached after 24 minutes and 80 percent after 42 minutes.
| Off / Standby |   0.05 / 0.21 Watt |
| Idle |  1.04 / 1.33 / 1.38 Watt |
| Load |
4.05 / 8.98 Watt |
    
| |
Key:
min: ,
med: ,
max: Metrahit Energy | |
| Xiaomi Redmi Note 15 5G 5520 mAh | Xiaomi Poco M8 5G 5520 mAh | Samsung Galaxy A36 5G 5000 mAh | Xiaomi Redmi Note 14 5G 5110 mAh | Nothing Phone (3a) 5000 mAh | Motorola Moto G86 Power 6720 mAh | Average Qualcomm Snapdragon 6 Gen 3 | Average of class Smartphone | |
|---|---|---|---|---|---|---|---|---|
| Power Consumption | 6% | -20% | -5% | 4% | -26% | -7% | -19% | |
| Idle Minimum * (Watt) | 1.04 | 1 4% | 0.86 17% | 1.15 -11% | 0.93 11% | 1.3 -25% | 0.91 ? 12% | 0.861 ? 17% |
| Idle Average * (Watt) | 1.33 | 1.24 7% | 1.75 -32% | 1.55 -17% | 1.67 -26% | 1.6 -20% | 1.306 ? 2% | 1.442 ? -8% |
| Idle Maximum * (Watt) | 1.38 | 1.27 8% | 1.82 -32% | 1.57 -14% | 1.68 -22% | 2.4 -74% | 1.428 ? -3% | 1.626 ? -18% |
| Load Average * (Watt) | 4.05 | 5.31 -31% | 3.87 4% | 3.69 9% | 4.8 -19% | 5.6 ? -38% | 6.6 ? -63% | |
| Load Maximum * (Watt) | 8.98 | 10.95 -22% | 7.66 15% | 4.75 47% | 8.2 9% | 9.78 ? -9% | 10.9 ? -21% |
* ... smaller is better
Power consumption: Geekbench (150 cd/m²)
Power consumption: GFXbench (150 cd/m²)
Battery life
The battery runtimes of the Redmi Note 15 5G are very good and, as expected, are on par with those of the Poco M8 5G.
The Nothing Phone (3a), however, demonstrates impressively that even greater efficiency is possible. Despite its smaller battery, it lasts significantly longer.
Notebookcheck overall rating
The Redmi Note 15 5G proves to be a budget friendly all rounder, offering a bright 120 Hz AMOLED display, strong battery life, a robust IP65 chassis and update support up to Android 19. Its weak points lie in camera flexibility, speaker quality and the ad-heavy software experience. It is an ideal choice for value oriented users, but less suitable for those who prioritise multimedia performance.
Xiaomi Redmi Note 15 5G
- 02/27/2026 v8
Daniel Schmidt
Total Sustainability Score: Possible alternatives at a glance
Image | Model / Review | Price | Weight | Drive | Display |
|---|---|---|---|---|---|
1. 76.5%  | Xiaomi Redmi Note 15 5G Qualcomm Snapdragon 6 Gen 3 ⎘ Qualcomm Adreno 710 ⎘ 8 GB Memory, 256 GB UFS 2.1 | List Price: 300€ | 178 g | 256 GB UFS 2.2 Flash | 6.77" 2392x1080 388 PPI AMOLED |
2. 76.3%  | Xiaomi Poco M8 5G Qualcomm Snapdragon 6 Gen 3 ⎘ Qualcomm Adreno 710 ⎘ 8 GB Memory, 512 GB UFS 2.1 | List Price: 300€ | 178 g | 512 GB UFS 2.2 Flash | 6.77" 2392x1080 388 PPI AMOLED |
3. 78%  | Samsung Galaxy A36 5G Qualcomm Snapdragon 6 Gen 3 ⎘ Qualcomm Adreno 710 ⎘ 6 GB Memory, 256 GB | List Price: 379€ | 195 g | 256 GB UFS 3.1 Flash | 6.70" 2340x1080 385 PPI Super AMOLED |
4. 75.4%  | Xiaomi Redmi Note 14 5G MediaTek Dimensity 7025 ⎘ IMG BXM-8-256 ⎘ 8 GB Memory, 256 GB UFS 2.1 | 190 g | 256 GB UFS 2.2 Flash | 6.67" 2400x1080 395 PPI AMOLED | |
5. 79.2%  | Nothing Phone (3a) Qualcomm Snapdragon 7s Gen 3 ⎘ Qualcomm Adreno 810 ⎘ 12 GB Memory, 256 GB | Amazon: | 201 g | 256 GB UFS 3.1 Flash | 6.77" 2392x1080 387 PPI AMOLED |
6. 76.3%  | Motorola Moto G86 Power MediaTek Dimensity 7300 ⎘ ARM Mali-G615 MP2 ⎘ 8 GB Memory, 256 GB UFS 2.1 | List Price: 330€ | 198 g | 256 GB UFS 2.2 Flash | 6.67" 2712x1220 446 PPI OLED |
Transparency
The selection of devices to be reviewed is made by our editorial team. The test sample was given to the author by the manufacturer free of charge for the purposes of review. There was no third-party influence on this review, nor did the manufacturer receive a copy of this review before publication. There was no obligation to publish this review. As an independent media company, Notebookcheck is not subjected to the authority of manufacturers, retailers or publishers.
This is how Notebookcheck is testing
Every year, Notebookcheck independently reviews hundreds of laptops and smartphones using standardized procedures to ensure that all results are comparable. We have continuously developed our test methods for around 20 years and set industry standards in the process. In our test labs, high-quality measuring equipment is utilized by experienced technicians and editors. These tests involve a multi-stage validation process. Our complex rating system is based on hundreds of well-founded measurements and benchmarks, which maintains objectivity. Further information on our test methods can be found here.
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