Microsoft has made public its known issues list for this build but has not yet included an issue more and more users have been complaining about: fast battery drain. Another user confirms: The battery last only few hours. Any tips to solve this problem? So far, Microsoft has not issued any official statement or update acknowledging this unusual battery drain. Just as you describe, without any use (or apps open) my 930 is going from 100% charge to 0% in about 4 hours. I’ve had it charging for several hours now and it’s only up to 19%. It also seems that if you actually use the phone whilst its charging that the % doesn’t increase at all! The phone is too warm to leave in my pants pocket 🙂 I’m hoping that someone has an idea of what is causing this, cause otherwise I’m going to have to use the reset tool.

Perhaps the battery drain issue in the current build is due to the install problems many users reported. More specifically, the Windows logo freezes on the screen for minutes on end as if the build install stopped. (In actuality, it continues in the background, with the only solution being to simply wait about 40 minutes to allow the device to finish the install.) Meanwhile, we suggest you try the following workarounds to extend your phone’s battery life:

Adjust screen brightness Turn off your display after some time of inactivity Activate battery saver when battery is low.

Annoying 0x80070002 error gets fixed in Mobile Build 14342 Bluetooth will be upgraded in Windows 10 Mobile Anniversary Update Opera update promises to increase your laptop battery life by almost 50% How to fix slow battery charging in Windows 10

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