Android OS battery drain

[wekas]

I have the Samsung galaxy s6 Edge plus (EU version). When I had the version 5.1.1 I rooted the phone, and when the 6.0.1 came out I downloaded the firmware from sammobile and flashed it with odin, everything is fine it's just that my phone dies really quickly because of Android OS. I tried wiping everything and reflashing to another firmware, I don't know how to fix it. When I tried flashing back to 5.1.1 I got a bootloop.

 

[kreiszahl01]

I have the Samsung galaxy s6 Edge plus (EU version). When I had the version 5.1.1 I rooted the phone, and when the 6.0.1 came out I downloaded the firmware from sammobile and flashed it with odin, everything is fine it's just that my phone dies really quickly because of Android OS. I tried wiping everything and reflashing to another firmware, I don't know how to fix it. When I tried flashing back to 5.1.1 I got a bootloop.

I have to say that my Wiko Rainbow and my Galaxy S4 both run faster, smoother and longer with Marshmallow 6.0.1 (Cyanogen 13). Makes me wonder...

 

[fd svensson]

There's a virus that drains battery that you could downloaded from Google play last month. There was some apps that had it, but they should been fixed now. I don't remember for now what the name was, but I should try to tell you later.

 

[Socrates1968]

I have the same problem since last upgrade. The phone dies SO quickly!

 

[Romulous]

My SM-G928F shipped with 5.1.1 and the battery life was fantastic, then my carrier released 6.0.1 which i installed directly through the phone and that's where i started to experience severe battery drain, with the device lasting as little as 6 hours with minimal use!

Apparently the problem is due to the device being unable to go into deep sleep when not being used hence why the battery is draining so fast.

Having previously flashed both my S2 and S4 on numerous occasions i though that the flash process would have been straight forward, which it was, however i either experienced a bootloop or soft brick.

I decided to return to 5.1.1 however after doing some digging on XDA it was advised to install a 5.1.1 bootloader and then flash the older kernel, this unfortunately did not work, even after several attempts.

I eventually tried Chainfires autoroot which worked first time and i am now on 6.0.1 with a battery from yesterdays charge currently sitting at 17h 34m 10s with an estimated 8 hours left! Now it has to be said that i did not use the phone much yesterday, the occassional browser/whatsapp/messenger useage, but i'm very happy with that. Picture attached below.

Knox was tripped at some stage during the multiple attempts at flashing, but i am not concerned with that.