why is my battery reduce fast.

[A_nawaz]

I updated my Samsung s7 edge to 7.0 at evening time and when i keep my mobile and turn off data as usual that time my charge was 78% when i woked up at 7 morning the battery was 49%.
This is annoying completely and the performance of my phone is also slow according to previous version....

Any solution?
Or
How to back on 6.0 ?

 

[B. Diddy]

Welcome to Android Central! First, try wiping the cache partition: https://support.t-mobile.com/docs/DOC-28028

If the battery drain continues, show us some battery stats. Charge up to 100%, then let it drain to 20-30% with normal usage, without charging in between. Then show us:

1. The main Settings>Battery screen.2. The fullscreen battery graph screen (which shows Awake time and Cell Signal Strength).
3. The Screen category (to see total Screen On time).
4. The Cell Standby category, if present (to see Time Without Signal).

http://forums.androidcentral.com/ge...ide-how-post-screenshots-android-central.html
You might have to install a 3rd party battery monitor, like GSam Battery Monitor, to get the Cell Signal Strength graph.

 

[Rukbat]

Look at the battery (in Settings) and see what's using so much of the battery. If it's Android System, Android OS or Google Services, it's because you updated the version of Android and it will settle down after a few days.

To go back to 6.0, see [Samsung] How to flash Stock ROM via ODIN (you'll have to pick the correct firmware for your country for your carrier). You'll also have to back everything up (see Backing up an Android Device), because flashing new firmware wipes everything.