Galaxy S6 Battery Life Reduced by Over 50% Since 5.1.1 Update

you could have a bad device.  How is the signal where your at?  That is what will make cell stand by go thru the roof.  The phone is raising its power levels to connect to the tower.  I have not seen worse battery life with my 920f s6 or ATT s6.  The wife has not seen any difference unless she is in the basement of the hospital for extended times then the phone drains like mad.

Greetings Glimmerman76,

Thank you for responding so quickly! The signal is not great in my area- either at work or at home- but is also has not changed since I installed the update. (I live two blocks from my office) My phone is on my desk at work and another desk at home- always in essentially the same place- within inches, I would say.

I realize that "searching" for a signal drains the battery very quickly, however:

1. Nothing has changed in my usage of the device.

2. The device typically becomes warm to the touch when it is actively seeking a signal. We live in a small community in a rural area and I have experienced this when I go out of range. It also drains the battery very quickly.

This is a very obvious, dramatic change in behavior which I can relate directly to the update from version 5.0.2 to 5.1.1. It appears to be a relatively consistent drain throughout the day. As an example, it has now been off the charger for 3 hours and 6 minutes and is at 81%. In the past it would have been well into the afternoon before it hit 80%.

I strongly suspect it has to do with the radio because Cell Standby was previously either second or third in the list of battery consumers- below Android System and often Screen as well- now it is consistently on top- by more than twice.

I'm officially stumped!

suggestion if you have wifi at home and work turn off your data connection and see if that changes things up....  Just testing a theory I have had here at work also where I only get 1 bar of service.  

Thanks again!

I can certainly try that. I will start tomorrow morning with the device fully charged. We have WiFi both at work and at home- my cellular data usage rarely reaches 0.1 GB in a month.

I will report back after collecting data for a few days.

Thanks again!

I am having the same issue with my S6 also and it too began after I installed the 5.1.1 update. I use the device the same as before with the same apps and could go 2 days on a single charge. Now I worry about making it thru the work day...

I have the same problem since my update to 5.1.1 a few weeks ago. Very frustrating. 

My guess?  AT&T will blame Samsung, Samsung will blame Google and Google will blame AT&T.   And they're ALL still making money from us fools....with no colution in sight.  Nothing but silence from all three massive companies.

I am trying the "turn off Google Now" thing now to see if it helps and will report back if it does help.

In the mean time, I've got a "state of the art" phone for which I paid cash that is about as useful as a 6 year old iPhone 3G.

Disabling Goolge Now does not help.

In less than two hours, the battery has gone from 97% to 75% with less than 5 minutes of actual screen-on use. The screen has been locked and off the rest of the time. I also have been clsoing all apps in the task manager when finished. 

This sucks!  

Come on AT&T, you are the ones that push the updates out, work with Google and Samsumg to find a solution. And please do it FAST!!!

(I know my brother on Verizon does not have this problem with his S6 running 5.1.1....soooo, that kind of points the finger squarely at you, AT&T)

whats using the most battery on the device?  I have 5.1.1 and get the same bat life as before the update.  

Greetings!

This is exactly the behavior I am experiencing. I have also started closing apps but it has made no measureable difference.

I have now disabled my data connection entirely and am running on WiFi. That seems to be helping with the battery life, but it is not an acceptable solution.

Again, this is a very obvious change which I can relate directly to the upgrade from 5.0.2 to 5.1.1.

I now have a second charger at work to keep the phone charged during the day- something which was never necessary prior to the upgrade.

I am extremely frustrated- both with the device and the lack of response from AT&T or Samsung.

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@Kenw99 wrote:

Greetings!

 

This is exactly the behavior I am experiencing. I have also started closing apps but it has made no measureable difference.

 

I have now disabled my data connection entirely and am running on WiFi. That seems to be helping with the battery life, but it is not an acceptable solution.

 

Again, this is a very obvious change which I can relate directly to the upgrade from 5.0.2 to 5.1.1.

 

I now have a second charger at work to keep the phone charged during the day- something which was never necessary prior to the upgrade.

 

I am extremely frustrated- both with the device and the lack of response from AT&T or Samsung.

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@Kenw99

your not going to get a response from ATT on the message boards.....  This is mostly a customer to customer forum.

You can pm @ATTMobilityCare and tell them whats up.