topic Re: Galaxy S8 (SM-G950F)) running hot and high battery drain in Other Smartphones

Galaxy S8 (SM-G950F) running hot and high battery drain

Shaamaan — Thu, 08 Sep 2022 05:16:29 GMT

My S8 is acting up. It's running hotter than usual and during that it'll drain battery really fast - I'm not doing anything strange with it either. Every now and again I'll get the notification about the phone requiring a restart because of a system process eating up too much CPU (no information on which process that would be however). The restarts don't help. I've even tried safe mode (the one where only system apps are permitted) and got that warning there too!

Sometimes... it gets better. The phone isn't running hot 100% of the time but I can't link it being hot to any specific action. Realistically I'm not doing much with my phone - pretty generic stuff, really: calls, texts, some internet browsing or YouTube watching, some authenticator apps. The most advanced thing I have on it is a VPN for work and a remote desktop app (recently used very sparingly). But, well, since the CPU issue happened even in safe mode - I don't think this is app related.

I've tried making a report via Samsung Members but all I got was a generic response that my logs will be forwarded to some engineering team and that's it - no more communications while my phone's still running hot.

Admittedly - I haven't tried a phone reset yet. Frankly - I'd rather not do that. I've got those authenticator apps I'd need to back up, as well as quite a bit of photos and videos to back up (I keep things on the phone, not in the cloud), so it'd be a fairly lengthy process to get everything backed up and restored. I'd rather try everything else before I get there.

Any ideas what I can do? The most annoying thing is that phone "maintenance" message... which doesn't tell me which process is eating up CPU. 😕 That, and Samsung support via the Members app being useless (while a mod on an old thread about a similar issue said reporting via Members is exactly what we should do: https://eu.community.samsung.com/t5/galaxy-s22-series/overloading-the-system-cpu/td-p/4885636).

Re: Galaxy S8 (SM-G950F)) running hot and high battery drain

gullisjam — Mon, 05 Sep 2022 18:15:00 GMT

I think there is a way you can do a sort of half restarting if your phone.

One thing I would try is going back to basics with your apps, go through them all and delete anything that's not essential and see if it makes a difference. Without restarting everything and resetting then you might not be able to come up with a solution

Re: Galaxy S8 (SM-G950F)) running hot and high battery drain

Leelee72 — Tue, 06 Sep 2022 19:38:15 GMT

Go to device care, click on the three dots on the right hand side and look at your app issue history. This showed me my bus stop app was crashing every morning at the same time I got the warning. I have deleted the app and will see if the CPU message comes again

Re: Galaxy S8 (SM-G950F)) running hot and high battery drain

Andy3 — Tue, 06 Sep 2022 20:27:42 GMT

S8 is old do people still use them?

Re: Galaxy S8 (SM-G950F)) running hot and high battery drain

Shaamaan — Fri, 09 Sep 2022 06:59:37 GMT

@gullisjam wrote:
I think there is a way you can do a sort of half restarting if your phone.

One thing I would try is going back to basics with your apps, go through them all and delete anything that's not essential and see if it makes a difference. Without restarting everything and resetting then you might not be able to come up with a solution

If the issue also happens in safe mode - how could it be any app I've installed? AFAIK in safe mode only the built-in apps are available (everything else is greyed out).

Re: Galaxy S8 (SM-G950F)) running hot and high battery drain

Shaamaan — Fri, 09 Sep 2022 06:59:21 GMT

@Leelee72 wrote:
Go to device care, click on the three dots on the right hand side and look at your app issue history. This showed me my bus stop app was crashing every morning at the same time I got the warning. I have deleted the app and will see if the CPU message comes again

Good idea overall but sadly nothing of interest in that list - most recent app crash is from months ago.

Re: Galaxy S8 (SM-G950F)) running hot and high battery drain

PaulM1 — Thu, 08 Sep 2022 14:49:30 GMT

The S8 remains a popular choice of smartphone, @Andy3, and many people take great care of their phone with the intention of keeping it for many years.

Just for the benefit of the Community, please endeavour to keep your input on-topic when posting in a thread.

Re: Galaxy S8 (SM-G950F)) running hot and high battery drain

Shaamaan — Fri, 09 Sep 2022 07:04:53 GMT

@Andy3 wrote:
S8 is old do people still use them?

My S8 has two issues, where only one is "age"-related.

The battery drain issue I described (which seems like a software thing) is one. The other is that I can't remote control my phone via Phone Link (Windows App) because it's too old.

Sure, it doesn't have a fancy wide-angle camera nor the CPU of modern phones... but I don't really need either. Brave works fine, as does VPN and RDP and that's what I need the phone for, as well as the occasional YT video (and the absolute basics of making calls and messaging of course).

Now if you happen to know why my S8 is overheating and draining 60%+ battery charge overnight - I'm all ears. Otherwise - why chime in at all?

Re: Re: Galaxy S8 (SM-G950F)) running hot and high battery drain

Andy3 — Fri, 09 Sep 2022 07:12:31 GMT

Ha every s8 I have see for sake is broken. I sold my s8 off because it go slow. Now I'm after a s8 just for gear vr. All I can find is broken or screen burn. A s8 is 6 years old its not a good phone now. It is definitely showing its age now. The s9 is better than the s8 and that's even slow and showing its age.

Re: Re: Galaxy S8 (SM-G950F)) running hot and high battery drain

Andy3 — Fri, 09 Sep 2022 07:14:53 GMT

S8 is 6 years old now it came out in 2017. Its definitely showing its age. Even a s9 from 2018 is showing its age. A s8 is not a good phone in 2022. Its not even 5g and its rather slow. It struggles to run apps now such as Google earth.

Re: Galaxy S8 (SM-G950F) running hot and high battery drain

SuperEleven — Mon, 19 Sep 2022 14:06:51 GMT

Buy a new phone. Modern phones are not designed to last longer than 5 years to be honest .

Re: Galaxy S8 (SM-G950F) running hot and high battery drain

Shaamaan — Mon, 19 Sep 2022 14:43:24 GMT

To all the smarty-pants out there who suggest purchasing a new phone... I did what I didn't want to do and reinstalled the OS and cleared the user partition and the phone's running fine now.

I did have a field-day getting all my data back into various apps (some of which is now lost)... Really annoyed by Samsung / support since a non-rooted phone should NOT have this issue or at least it should be possible to fix without a phone-wipe.

To anyone else who ever has the same issue and finds this thread - I'm sorry but I don't have a better solution other than to wipe the phone clean.

Re: Galaxy S8 (SM-G950F) running hot and high battery drain

Rabbit82 — Sun, 30 Oct 2022 05:28:05 GMT

Been getting the same for several months now on my S8+. I am very suspect of the One UI Home since this seems to be taking the most power from the battery continually. Cannot seem to get any further than that. Have recently noticed a rapid drain on the battery and recharging twice a day without any excessive use of the unit. Have succumbed to setting an auto restart of the phone every morning. Now seriously considering giving up and going back to an iphone.

Re: Galaxy S8 (SM-G950F) running hot and high battery drain

Shaamaan — Sun, 30 Oct 2022 12:17:45 GMT

@Rabbit82 wrote:
Been getting the same for several months now on my S8+. I am very suspect of the One UI Home since this seems to be taking the most power from the battery continually. Cannot seem to get any further than that. Have recently noticed a rapid drain on the battery and recharging twice a day without any excessive use of the unit. Have succumbed to setting an auto restart of the phone every morning. Now seriously considering giving up and going back to an iphone.

Just to confirm if you have something similar - did you notice the phone running notably hotter?

If the phone's running cool (i.e. there's no real notable high-CPU drain) then your battery may simply be running old. If it IS warmer, however, then it might be worth thinking doing a stock reinstall. 😕 I found that in my case restarting the phone didn't really help with the power draw.

BTW: If you have another Samsung phone lying around (even an older one) you can use the backup / restore of Smart Switch. Note - it's NOT very smart, and it's still worth backing up anything you can manually as well. Contacts, SMS and photos are easy. But other app data is almost always a lot of pain.

Also, just to put this out there - my phone's been running perfectly fine since I reinstalled the firmware. Battery holds about as well as I'd expect (will easily last over a day without a charge and some moderate use).

Re: Galaxy S8 (SM-G950F) running hot and high battery drain

Rabbit82 — Sun, 30 Oct 2022 12:41:17 GMT

Many thanks for your comments. Yes, it does occasionally get quite warm, so obviously something is occurring but am unable to understand why. Once I get around to doing a full backup I guess a reinstall is the best option, although very reluctant at this time. Thanks again