Android 13 as a stable update for Pixel-series phones has finally landed, conferring a number of long-anticipated features as introduced during Google's latest I/O event on the devices. However, it seems that this out-of-beta software version still has some bugs, one of the latest to gain complaints is the abrupt loss of wireless charging functions.
According to a couple of threads on Reddit, this issue might arise on nearly every relevant Pixel variant, although the majority of users affected use the Pixel 4 or 4 XL. The problem appears to manifest regardless of whether the wireless charging accessory is first-party or not, and apparently results in a specific "Not Charging" notification when the 2 devices in question are connected.
Some users conclude that the new Android 13 bug might be related to a Google feature that restricts charging to a limit of 80% in case a smartphone is left on a wireless charger for a prolonged period. However, while some report that the problem goes away when this Adaptive Charging setting is turned off, others assert that this fix does not work for them.
Other new Reddit-derived workarounds for this bug include disabling the Pixel Stand app; "forgetting" the stand in the Pixel's UI and then pairing it again from scratch and booting the smartphone into safe mode, connecting it to a wireless charger then rebooting back to a default mode; however, again, they may not work in all cases.
Google is likely to resolve the issue in a future patch or update - however, until then, some Pixel users will simply be without one of the charging options they may have bought their device for.
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Source(s)
Reddit (1) via 9to5Google
Reddit (2) via 9to5Google