After Android 16 Upgrade, Something Eats Battery in Less Than Two Minutes

[pone]

I upgraded a Google Pixel 6 to Android 16, and something truly weird is happening. Typically, in the afternoon, out of nowhere, the battery QUICKLY descends to 0%. I set up a Tracker app task to catch this early on, and I am sitting there watching the percentages drop by about two percent every second. Something is very aggressively eating CPU. I don't even understand how that level of battery use is possible. Even if a system routine got stuck and looped, how could it use up battery that way?

I enabled developer mode, and I have a Perfetto trace file of CPU usage during a two-minute period after this problem started. I catch the problem, plug the phone into power so that I don't lose my environment from power loss, and then I do the trace. I don't understand what to look for in the trace output that I get from the Perfetto Dev UI. Can someone point me to a video that would explain how I can use this trace to identify a rogue process? I'm not trying to learn every feature in Perfetto. I am trying to focus on identifying which process is consuming all the CPU.

I did use the Battery Usage feature, and I don't see any application there taking more than 25% of CPU. And even if an application was taking 90%, I don't see how it could run the battery down this quickly.

Is the behavior I am describing possibly a hardware failure in the battery?

 

[B. Diddy]

Welcome to Android Central! I would first test the phone in Safe Mode to see if this still happens. If it doesn't then it's likely some 3rd party app that's causing the issue. https://support.google.com/pixelphone/answer/2852139?hl=en

I'm also going to move this from the Android 16 forum to the Pixel 6 forum, since it's more likely an issue related to the device itself rather than Android 16 in general.

 

[pone]

Welcome to Android Central! I would first test the phone in Safe Mode to see if this still happens. If it doesn't then it's likely some 3rd party app that's causing the issue.

The problem happens once a day at some random time, so going into safe mode doesn't seem like a reliable way to approach this. I cannot use the phone all the time in safe mode.

 

[B. Diddy]

Have you tried this option in the Battery Diagnostics? https://support.google.com/pixelphone/answer/6090599?hl=en