Samsung Galaxy S6 Cell standby battery drain?

where are those settings

Are you asking about the App Optimization menu in the screenshots mgfjd12 posted above? If so, they're a part of the Smart Manager application -- which you may not have access to depending on your carrier, as several have disabled access to those features. Samsung's website states: "Smart Manager is currently available for Samsung Galaxy S6 devices from T-Mobile, US Cellular, and MetroPCS", and is likely intact on the international version as well.
 
Also recommend the Doze app, turns off all network connections (unless you designate to allow) when the screen is off. I go to sleep and wake up with 2-3% drain overnight as this app does its thing.
 
I have 2 week old VZ S6 and was pleasantly surprised to only lose 1% per hour while I sleep. Using Google Launcher, disabled bunch of apps, but otherwise pretty stock.
 
I have a tmo S6. After disabling apps I don't use including the my T-mobile app, amd doing the cache fix for cell standby, I loose 1% every two hours the phone is off. I use the Nova launcher.
 
Turning off volte, powering off, booting to safe mode, clearing the cache partiton, rebooting, enable volte.
 
With the wifi calling update my cell standby is 1>3% so far. Previously was in the 25>35% range. My battery usage has dropped dramatically due to the very low cell standby. Anyone else with the wifi update on Verizon notice this?
 
With the wifi calling update my cell standby is 1>3% so far. Previously was in the 25>35% range. My battery usage has dropped dramatically due to the very low cell standby. Anyone else with the wifi update on Verizon notice this?

My standby time also has dramatically decreased to 1-2% every hour or so but my battery seems worse though unfortunately. I'm also on Verizon.
 
How?? Clear cache partición in safe mode ??
No is in recobery? ?

Power the phone off. When powered off, push and hold the volume up, power, and home buttons simultaneously until the Samsung Galaxy s6 logo comes up. It will be booting to safe mode. It will think it is installing an update for a little bit - just wait - it does this even if there is no update to install. When it completely boots to safe you will see a list. Use the volume buttons to scroll through the list and choose
"wipe cache partition" and select it with the .power button. When that wipe completes, select "reboot now".

Be careful in safe mode - there is a factory reset selection that wipe your data partition. Do this all at your own risk - but it is pretty safe.

You can google all of this.
 
Hi guys,

I wanted to inform you of my discovery. I am not from USA, so I do not have the Verizon / AT&T extra features (such as advanced calling option), I do however have the cell standby battery drain issue and I have found an workaround that CONSISTENTLY works for me (no issues this past week).

The battery drain has started for me as soon as I did the OTA update to Android 6.0.1. I tried to wipe the cache partition and even factory reset with
no effect.

Please try this out and share this post if it helps your cause.

The only thing I am doing differently now is turning off Mobile Data when I enable Wi Fi and viceversa. So WiFi on -> Mobile Data off, Mobile Data on -> Wifi Off. This stops the battery drain for me. I know mobile data should theoretically get disabled by default when WiFi is on, but something is happening that is draining the battery.

Here are some screenshots, keep in mind that in some days Cell Standby has been responsible for 60% of battery usage.
Both WiFi and Mobile Data on at the same time:
Screenshot_20160415-182746.jpg Screenshot_20160415-182758.jpg

WiFi and Mobile Data active one at a time:
Screenshot_20160415-020001.jpg Screenshot_20160415-020009.jpg
 
I always do that in my S6. Never let both Wi-Fi and Cellular Data on together and still have a huge "Cell Standby" drain.

I'm using S6 International version (I'm from Brazil) which does not even have Advanced/HD Calling, VoLTE or Wi-Fi Calling features (maybe they're deeply enabled somewhere in the buildprop and I don't know how to mess with that).

I'm getting 3h SoT at max and somewhat like 20 to 23h total battery time.

The last stuff I'll try before selling the phone is using the "Only GSM" option under the Data Network menu.
 
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Power the phone off. When powered off, push and hold the volume up, power, and home buttons simultaneously until the Samsung Galaxy s6 logo comes up. It will be booting to safe mode. It will think it is installing an update for a little bit - just wait - it does this even if there is no update to install. When it completely boots to safe you will see a list. Use the volume buttons to scroll through the list and choose
"wipe cache partition" and select it with the .power button. When that wipe completes, select "reboot now".

Be careful in safe mode - there is a factory reset selection that wipe your data partition. Do this all at your own risk - but it is pretty safe.

You can google all of this.



That is not Safe Mode you muppet! YOU can Google that! LMFAO!!!!!!
 
This seems a common issue of s6. I just bought this device a week ago, the seller set it up for me and first days it lost over 20% battery overnight which was crazy. Then I did a reset factory and it changed. Obviously this phone's battery is not good but not that bad. Currently mine loses 4 - 5% overnight during standby.
 
I checked mine and screen consumes the most (30 or above), android system takes usually over 10% only.