Google Pixel phones experiencing unusual battery drain after 12 update

Google has recently released Android 12 to the public. Unfortunately, some Pixel phones are experiencing unusual battery drain after updating to this new version of Android. Some users have found that their phone will go from 100% battery life at the beginning of the day to just 20% by lunchtime. This is not normal behavior for a Google Pixel phone and it can be extremely frustrating!

We want you to know about this issue so you can avoid it happening on your device if possible.

If you own a Google Pixel phone, there are some things you should do before upgrading your operating system to Android 12. This will help ensure that your device is not only protected against the battery drain issue, but also other Android badness.

You should backup all important data on your phone before attempting any type of upgrade. It doesn’t matter if you are planning to use Google Drive or another cloud storage service for this task, just be sure to have a copy of all of your images, videos, and other files. It’s better to be safe than sorry!

You should also make sure that you have a working version of TWRP installed on your device before starting the upgrade process. This is because Google has locked down the boot loader for Pixel phones in Android 12, making it impossible to downgrade to an earlier version of the system.

With this in mind, please remember that you should only follow the steps listed below if your device meets these criteria. If it doesn’t, you could encounter some problems if you proceed with the following instructions!

 

Here are all of the steps you need to follow before attempting to upgrade your Google Pixel phone to Android 12:

Backup your important files with Google Drive or another cloud storage service. Boot into TWRP and make a nandroid backup. (Optional) ¬†Create an ADB backup if you want to be extra safe. Wipe your device using the advanced wipe menu option of TWRP. This will delete all of your data! You should also wipe it if you are unsure of what build you’re running. This will just be necessary the first time you update to Android 12. Flash Future Builds zip file using TWRP. Reboot your device and wait for it to boot up! It’s best to let the device fully restart on its own rather than manually restarting right away. The boot up time after you flash a new build can be very long. You should not flash any future zips or delete the zip file you used in step 4 until we get confirmation that this issue is resolved!

There’s an issue causing devices to not hold a charge after Android 12 upgrade. If you own a Google Pixel phone and meet the criteria we mentioned earlier, you can follow these steps to resolve this serious issue:

Boot into TWRP and delete the cache folder. Reboot your device and let it fully restart. (Optional)  Delete the file /data/system/batterystats-MoreCollectdHandles.xml . This will prevent your phone from showing 100% battery life at the beginning of the day.