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S7 after Oreo update Battery - slow and poor battery life.
BARJAC59
Enthusiast

After getting updated to Oreo a few weeks ago, both S7s in our household are suffering from very poor battery life. Checking battery use it is Android System using 20% and Android OS using 10%. Everything else is 1% or lower. Even with no phone use, the battery drops like a stone.

Also, the phones are very slow - normal use like browsing, switching between apps, opening new apps - it generally feels much slower than before the update.

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Re: S7 after Oreo update Battery - slow and poor battery life.
vzw_customer_support
Customer Support

Barjac59, your phones and service are important to us. Software updates absolutely are not created to reduce that life but rather enhance the services that you are enjoying. As you mentioned that this seemed to happen after the update, do you recall adding any new apps or games around that time? What steps do you take when closing an app? Are you using the original manufacturer charger to charge the phones? Please try the phone in safe mode to see if the battery is still dropping so quickly. See steps at http://spr.ly/6585DUyWd;

Loren_VZW
Follow us on TWITTER @VZWSupport
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!!

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Re: S7 after Oreo update Battery - slow and poor battery life.
BARJAC59
Enthusiast

Hi and thanks for the reply.

I have installed new apps after the update, I install and uninstall apps almost daily. The new apps show very low battery usage though – Android System and OS are the main culprits. My wife does not install apps on her phone as much as I do, and she is having the same issue – she is actually the one who realised the poor performance first.

When closing apps I generally do a “Close All”. I am using a combination of different chargers depending on where I am, but the one I use the most is the OEM charger.

I will try the safe mode, and then also do a factory reset to clean everything up and see if that helps.

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Re: S7 after Oreo update Battery - slow and poor battery life.
jrh4054
Specialist

Have you run a health check on the phones to see what apps are draining the batteries?  There can be apps running in the background that you don't know about.  Closing all the apps doesn't really stop all apps from running. 

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Re: S7 after Oreo update Battery - slow and poor battery life.
BARJAC59
Enthusiast

I use the built-in App Power Monitor found under Device Maintenance, Battery to see what apps are draining the battery. Using this I have placed most of my apps in Sleep mode, but the battery still drains very fast.

Is there another way?

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Re: S7 after Oreo update Battery - slow and poor battery life.
jrh4054
Specialist

You can run a phone health check from the My Verizon app.  That will show which apps are draining the battery.  You can force stop those apps, which will help.  Other than a few preinstalled apps, you can't disable most others. 

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Re: S7 after Oreo update Battery - slow and poor battery life.
vzw_customer_support
Customer Support

Thank you for the info JRH4054. Barjac59, having we appreciate the additional details provided. Click here for instructions on running a Device Health Check: http://spr.ly/6582DUJVj. Can you try using your device while in Safe Mode to see how your battery performance is? http://spr.ly/6584DUJVe

 

Alberto_VZW
Follow us on TWITTER @VZWSupport
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!!

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Re: S7 after Oreo update Battery - slow and poor battery life.
BARJAC59
Enthusiast

I have run the health check and it does not show any apps draining the battery. It has picked up a lot of temp data that I have now removed. It is also complaining about my charger – I will test using only the Samsung charger for a couple of days, although I doubt it would make a difference, as I was using the same chargers before the update to Oreo.

Re: S7 after Oreo update Battery - slow and poor battery life.
jrh4054
Specialist

Good luck!   I think you'll need it.

Re: S7 after Oreo update Battery - slow and poor battery life.
Klue
Master

Before I did the Oreo update I uninstalled every app I put on the phone over the years then cleared the phones cache. Good housekeeping as I didn't use most of those apps anymore. Now I am only installing apps that I really use and so far the Oreo update has been great. Battery life has improved significantly and the fast charging still works fine.  I run the Device Maintenance  every day and its always at 96-99%. You might want to try this before you do a full factory reset as personal settings are not changed.