Tracing Wake-Locks to Fix Unexpected Standby Drain on Android 12+

[andrewmil85]

Hi all—noticed serious battery drain on my Pixel device ever since moving to Android 12. After hours in ADB, I confirmed it’s likely caused by an app—or system service—holding a wake-lock unexpectedly.
I’ve ran:
adb shell dumpsys batterystats > batt.txt
adb shell dumpsys power > power.txt


…but I’m having a hard time correlating wakelock entries to actual apps. Anyone on here solved this cleanly?
Looking for tips on:

• Filtering the heavy wake-locks efficiently
• Identifying which SERVICE or PACKAGE is behind them
• Working with Android 12’s stricter background execution limits
• Good apps or adb flags for real-time wake-lock tracking

Would love to hear how others traced and squashed these phantom drains. Thanks!

 

[Laura Knotek]

Which Pixel do you have? Android 12 is four years old, so your device is old at this point. Could it just be a failing battery?