Samsug Galaxy S7 Rapid Battery Drain After April 2019 Software Update (G930VVRS9CSC1)

[DavidD-3]

My Samsung Galaxy S7 (SM-G930V REV 0.6) has started experiencing high battery usage after the April 2019 Software Update (R16NW.G930VVRS9CSC1) pushed by Verizon on 4/3/2019. A fully charged battery will not last overnight with the phone idle. The battery usage indicates Android OS is using upto 63% of the battery and Android System is using 24% of the system. Prior to the update, the phone could run 36-48 hours when idle and 24 - 36 hours with moderate use.

I have tried Clearing the system Cache and a "Battery Recalibration", the issue appears to be the mAh usage by Android OS and Android System.

Has a default been changed in the Software Update, that needs to be changed to prevent this battery drain?

[lovewafer]

I am having the same issue since this update on April 2nd.

[vzw_customer_support]

We always want you to have the power that you need lovewafer. I am sorry to hear you are having issues with your battery, and we want to be sure we find out the cause so we can fix this. First, you will want to put your phone in Safe Mode for 24 hours. This will tell us if it is an app that is causing this battery issue. You can find those steps here: http://spr.ly/6609Ejt29 Let us know how this goes. 

RosanneM_VZW

[stude29]

I am having this issue as well. 

[vzw_customer_support]

DaviD-3-

Our goal is for you to continue enjoying your phone especially after a major update. Software updates are sent by the manufacturer, not Verizon. With that been said, we stand behind our products and we will be more than happy to troubleshoot your phone and ensure it is working as expected. I would suggest testing your phone in Safe Mode for at least 24 hours and check on the Android OS percentage to see if there is a difference. Please follow the link to test the phone in Safe Mode and keep us posted https://vz.to/2cpmyZ3

CarmenT_VZW

[jrh4054]

CarmenT_VZW, your link is bad.

[tikibar1]

It works for me.

Samsung Galaxy S7/S7 Edge - Restart in Safe Mode

[vzw_customer_support]

We are sorry to read that the link did not work for you. Here is another link that you can try: https://www.verizonwireless.com/support/knowledge-base-203892/  It has the same steps and has been tested to work. After your device has been used in Safe Mode, let us know if the battery drain was the same. Thanks. 

RogerZ_VZW

[geoman56]

I am having the same problem. I also have tried system cache clearing, battery reset, and safe mode for 24 hours. Nothing has helped. I have also started uninstalling a number of little-used apps. Still no success. I have noted a significant number of auto app updates in the last several days. No improvement from this either.

[NuthHouse]

I am having the same issue, and have tried the same remedies. In SafeMode, I get 15 hours of battery life without using the phone much during that time. It showsAndroid OS using about half the battery during that time. My wife's S7 has the same issue. Sounds like a problem with the update.

I hope Verizon can figure this out before we give up and go to another carrier.

[vzw_customer_support]

NuthHouse,

I appreciate you trying Safe Mode as a troubleshooting step for the S7. We definitely want you to be able to count on your battery when not near a charger. Please allow me to explain that if you have issues after a software update, a factory data backup and reset resolves many issues. I would recommend giving this a try: https://www.verizonwireless.com/support/knowledge-base-203264/ Please let us know how it goes, thank you.

ChristinaB_VZW

[NuthHouse]

I tried Factory reset yesterday. with my battery fully charged today. I have used my phone normally for 8 hrs. I have only 42% left. Estimated usage time 15 hrs total. I still show Android OS using 30% of my battery, and Android System using 10%.

Are there any other suggestions?

[vzw_customer_support]

geoman56,

Software updates are intended to enhance your experience on your phone, not the opposite. We appreciate the troubleshooting you've already completed. Since software updates impact the environment in which all applications and functions on your phone work, they can cause increased battery usage in the days following an update. However, since you've tried troubleshooting with the phone in Safe Mode, clearing the cache and recalibrating the battery, we recommend backing up your phone's contents using Verizon Cloud or Google then performing a Factory Data Reset without restoring any applications, content or inserting any SD Cards into the device. A reset can be done using the steps shown on this link https://www.verizonwireless.com/support/knowledge-base-203264/. After completing the reset and before reinstalling any information or applications, test the life of your battery. If you notice an improvement, reinstall your personal content and test again. If all is still well, begin to reinstall your applications one at a time, testing in between for any affects on the battery. Let us know what happens.

ShawnteJ_VZW

[Shel2]

Since the April 2 update I too have expeienced exsessive battery drain.  I also have cleared the cache, done multiple restarts, let the battery completely discharge, etc.  Yesterday at 1 p.m. I put the phone in safe mode per suggestion here and the only thing I've done is to use the phone for about five texts and also use Settings>Device maintenance> Battery to check the battery status and see what was running.  By 6 a.m. , 17 hours later, the battery was at 13%.  Clearly normal usage would have exhausted it much before 6 a.m. The Android OS had used 65%, Android Sys 12%, Phone Idyl 2%, Screen 2%, Cell stand by 1%.

Is it true the only thing I can do now is to go back to factory defaults?  Won't there be a new software update that will fix the battery drain problem that seems to be affecting a number of us?

Thank you.

[Shel2]

I have updated all my apps and thought the battery drain had slowed but I am still having to charge every 10 hours or so and leave charging over night or battery will be dead in morning.  Seems like still excessive battery drain given I am ONLY using it for maybe 8 texts a day and nothing else!  Not for phone, no Waze, no email.  Any ideas for next steps?

[vzw_customer_support]

Shel2, We rely on our phones heavily so we understand the importance of having a battery that lasts. Keep in mind the age of the phone will have an impact on your battery. The phone was manufactured over three years ago and the battery will not last as long as it did when the phone was new. We suggest enabling the battery saver mode. For details, http://spr.ly/6603E5Jet

TrinetteW_VZW

[Shel2]

I have been using the MID Power Saving Mode since I got the phone. 

But I have good news -- I made NO other changes (that I am aware of)  since updating the apps a few days ago... and after that I still experienced the Android System using 35% or more and the battery drain continuing so that the phone would go dead overnight if not plugged in. But as of two days ago, now the Android System is back to using a modest 2%.  I am able to charge the phone in the morning and it lasts into the next day.  It hasn't been going dead after only 12 hours.   Can't explain it but wanted to let you know.

[mdcclark]

Mine magically healed itself today after some recent app updates. Verizon’s messages was one of the updates. 

[mdcclark]

As of a couple of days sgo it suddenly reverted back to the short battery life.

There have been numerous updates to various apps so difficult to ascertain which one may have caused it.

[vzw_customer_support]

Mdcclark, after a few weeks of your device remaining charged I can only imagine how frustrating it is to be back to the quick drain. Please know that we have confirmed with the manufacturer that they have tested numerous S7's with no issue after the software update. They do suggest that you check your screen timeout as well as brightness and then test the phone in safe mode to see if you then see a change in battery length. To place the phone in safe mode, please follow these steps:

1. Press and hold the Power button until the Power off prompt appears then release.

   ---

2. Touch and hold Power off until the Safe mode prompt appears then release.

   ---

3. To confirm, tap Safe mode.
   The process may take up to 30 seconds to complete.
   Upon reboot, "Safe mode" appears in the lower-left of the unlock/home screen.

After placing in safe mode please watch the battery usage and let us know if there is any change.

LorenB_VZW

If my response answered your question please click the _Correct Answer_ button under my response. This ensures others can benefit from our conversation. Thanks in advance for your help with this!!

[vzw_customer_support]

Great! I'm happy to see your device is back up and running properly. If you ever need us in the future, please don't hesitate to reach out to us. Thanks for being a valued Verizon Wireless customer. ChetonJ_VZW