Mobile network drains 70% of battery per hour in Android 12
- /e/ version: 1.6-s-20221201239247-dev-FP3
- Device model(s): Fairphone 3
- Device rooted: no
I just picked my phone up after a quite while (a few hours) of not using it, and noticed it wasn't turned on anymore (I hadn't shut it down). After re-booting, I noticed EXTREME battery drain.
At 2:37 the battery was at 90% (ninety).
At 2:58 it was at 58% (fifty-eight).
That means, within 19 minutes, the battery lost 32%, which is insane. That means, it loses ca. 1.7% every single minute!
I did not do anything unusual, only one or two apps were running in the foreground, nothing was being downloaded, the device was inside at room temperature (ca. 20°C = 68°F).
According to the battery settings, the mobile network connection is responsible for draining nearly 70% of the battery. Though, the cellular data connection (a.k.a. 4G) has been disabled since the re-boot, and the device was only been connected to my WiFi.