Erratic battery the week before and now since upgrading to Nougat

[CWinkler]

Well, LineKill, yesterday evening while at a social function, phone dropped to 30+% and was quite hot. Got home and charged it up to 60% before going to bed. Got up this morning and it had dropped to 6%. Short of calling US Cellular tech support to see if they'll authorize a new S7, what other suggestions might you have? I really hate having to compromise how I use the phone (like turning off WiFi location services or GPS) when I never had to do that before. It's so odd that somes days will be great and others not. And it's always hot when it happens. After the Note 7 battery, have to admit I'm a bit leary. Always had Motorola phones, starting to question the wisdom of switching to Samsung.

Screen shots attached from last night and this morning. Android System continues to be the culprit. Expanded list of what's in it is the last screenshot.

 

[LineKill]

It started before Nougat, so it cannot be that. It happens very randomly, so it cannot be...Sorry, telling you what it isn't will not help you at this point.

I understand your frustration. I agree, you should not have to turn off anything. What you did turn off was only temporary for troubleshooting. Without the phone in my hand I am kind of working in the dark.

If you have an SD card installed, take it out, it could be failing. You can boot into safe mode to see if it is an installed app
https://support.t-mobile.com/docs/DOC-28008, however, you would have to be in safe mode for a while to find out anything since it is so random.

I certainly do not know everything and there are people on here that I am sure are more knowledgeable than I am. So, if anyone has any experience with this particular issue, please chime in!

Calling US Cellular does not sound like a bad idea.

I am at a loss and have no more ideas CWinkler. I am sorry I couldn't help you. I will let you decide on what you want to do from here. I am not going anywhere, so if you have any further questions don't hesitate to ask.

 

[CWinkler]

called US Cellular, and rather than jumping into getting a replacement refurbished phone we decided to first try a new SIM card - then if there are still issues she suggested removing the SD card (but since this has happened with 2 different cards in hard to think it's the card itself) ... and then if there are still issues then go the replacement route. Under warranty until 25 November 2017

 

[LineKill]

Well, let me know how everything goes as I am quite interested at this point.

 

[CWinkler]

Well, let me know how everything goes as I am quite interested at this point.

LineKill, will do! Last night went from 95% to 91% but was up at my boyfriend's where there's better cell reception. Will see how it does at my place and keep you posted. Have also sent a bug report to Samsung along with the last couple screenshots. Will see what they say.

 

[CWinkler]

SIM was changed on Saturday 6th May. All was going well until this morning, 10th, when phone was down to 2% at 04:30. Seems like I get 2-3 good days and then all goes awry again. Unsure what either of the 2 different SD cards might have to do with any of this, so not sure whether it makes sense to take the SD card out and see what happens ... or just have US Cellular start the process to get a replacement phone. Plan to call my US Cellular store today to see if I have to make the 45 minute drive to start that process, or if it can be done over the phone. Hopefully the person I've been working with there is working today.

Photos show the morning status (not on charger during night), before bed status and where there was a large dip the details from the Android system. Didn't get that right away this morning since I needed to get the phone on the charging pad. So the last 2 screenshots are the Android System details from this morning.

 

[LineKill]

Hmm, interesting It is more than likely not the SD card itself, but could possibly be data that you had restored onto the card after the FDR.

I really don't know what to say at this point accept that this really sucks and I feel for your misery.

If this happens on your replacement phone I won't even know what to think. We will work it out though with a little, err a lot, of patienceツ

 

[CWinkler]

Talked to my US Cellular guy, and will let GSam monitor battery issues while he's off on vacation (back on 22nd May). That should still give me time to have a 'new' phone sent to me and set up before Memorial Day holiday (fingers crossed). Or I'll live with what I have until the holiday is over (have plans to be away the weekend before). At this time leaving the SD card in the slot. Charging the phone up to 100% right now so that it has a good chance to still be alive in the morning. At 60% after a day at work and with GSam monitoring things. Also downloaded and did the ADB thing to get at the additional information about apps sucking the battery. If nothing else, will be information for others having similar issues (as I know that unfortunately I'm not alone).

 

[CWinkler]

Phone went from 94% to 82% overnight, so a good night

 

[CWinkler]

Unfortunately, didn't have to wait long to get GSam stats on my phone. Went from 63% Thursday evening to 3% this morning when I got up. Attaching screen shots from GSam. If my US Cellular guy is working today, looking like I might as well start the process of getting a replacement phone rather than wait another week.

If anyone has any ideas from these screenshots, very interested in hearing them. Have already done a Factory Reset and multiple Cache Wipes.

 

[Chalanthorn Chanmathikornkul]

What is the theme namr?

 

[CWinkler]

Well, a new-to-me phone is on order and should arrive early next week. Had interesting experiences with the battery again today, twice. Screenshots attached. Again, Android System is the big culprit and temperature gets hot. Sure hope the 'new' phone doesn't have similar issues.

 

[LineKill]

I think it was a good idea that you went ahead and ordered a replacement. It is obviously not getting any better. Hopefully you have better luck with your new phone.

 

[CWinkler]

UPDATE: received 'new to me' phone from US Cellular yesterday. Used Smart Switch to transfer information (for better or worse, what the US Cellular person recommended). Still in the process of resetting the phone to get it to how I'd like, and fingers are crossed that I don't see similar battery issues. Did have to update to N after the phone went through all the setup stuff. Did a cache wipe after all the updating was done.

Attaching GSam screenshots from my first night. Phone was about 90% when I called it a night.

 

[CWinkler]

Well, phone woke me up at 3:53AM beeping because it wanted to be connected to the charger (was at 11% from 44% when I went to sleep). I'm kicking myself for doing the restore instead of installing everything from scratch, and am thinking I'll do a FDR this weekend just to give the phone a clean chance to perform well. Or should I not expect to get a full day's worth of phone out of a charge? I make very few calls, some texts mid-day. Don't even use it at lunch to do emails - use my tablet. And connected to WiFi all day at work.

 

[Eric Peterson8]

Nougat has tripled battery drain on my Galaxy S6. My biggest draw is Idle, followed by Android system. I have 6 apps, mostly for backup/restore, disabling packages, etc. Disabling the apps or deinstalling is useless. Safe mode (same thing) is useless. Ditto for wifi on or off, bluetooth, and even cell service. I turn my phone to exclude LTE, allow only GSM. I get no service, but still have the same battery suckage. Ultra power saving mode is useless and lies. It says 110 hours remaining while the phone is draining 3% per hour. The only cure is airplane mode. Prior to nougat my phone drained 1% per hour sitting on my desk doing nothing.

I have all the supers things people mention: clearing cache, factory reset, etc. The factory reset was especially painful since I didn't save my contacts (saved pix and messages). After I typed my contacts, Google decided to sync up with the empty contacts list it helpfully stored after the factory reset. So I lost them again, but before typing them again I installed a contacts saver app.

The Sprint people said on their forum that I should go to the Sprint store, but have no clue what the Sprint store will do when I ask the,. The "grand masters" on that forum don't bother to read what I wrote and suggest going into safe mode because my apps are bad. Doesn't matter how many times I have mentioned doing safe mode, or "ultra" power saving which also disables all my apps.

 

[CWinkler]

Nougat has tripled battery drain on my Galaxy S6. My biggest draw is Idle, followed by Android system. I have 6 apps, mostly for backup/restore, disabling packages, etc. Disabling the apps or deinstalling is useless. Safe mode (same thing) is useless. Ditto for wifi on or off, bluetooth, and even cell service. I turn my phone to exclude LTE, allow only GSM. I get no service, but still have the same battery suckage. Ultra power saving mode is useless and lies. It says 110 hours remaining while the phone is draining 3% per hour. The only cure is airplane mode. Prior to nougat my phone drained 1% per hour sitting on my desk doing nothing.

I have all the supers things people mention: clearing cache, factory reset, etc. The factory reset was especially painful since I didn't save my contacts (saved pix and messages). After I typed my contacts, Google decided to sync up with the empty contacts list it helpfully stored after the factory reset. So I lost them again, but before typing them again I installed a contacts saver app.

The Sprint people said on their forum that I should go to the Sprint store, but have no clue what the Sprint store will do when I ask the,. The "grand masters" on that forum don't bother to read what I wrote and suggest going into safe mode because my apps are bad. Doesn't matter how many times I have mentioned doing safe mode, or "ultra" power saving which also disables all my apps.

Wow, @Eric Peterson8, so sorry! You're making me feel much better about how my 'new' phone is behaving. But still think I need to try the FDR route, and wish I had started this phone out that way instead of taking the 'easy way out' and copying over phones. I wondered when all my apps installed and updated prior to the phone updating from M to N. But by then it was too late.

I sure hope you get your battery issues sorted out soon. Best of Luck

 

[SpookDroid]

Well, since you're doing a Factory Reset anyway, I'd say go that route but DON'T restore any apps yet. I know, it'll be painful, but other than Safe Mode and manually activating each app, this is the best way to do it. See how your phone behaves after a Factory Reset and no apps. That's your 'fresh state' picture. Then after a night's full charge, start adding your most used apps (if you can hold off on your not-so-common apps, I'd do that for now). See how it behaves. If the problem comes back, the list of apps you've installed lately is shorter and a lot easier to troubleshoot.

Also, from your pictures, your cell reception is really low, so I'd suggest either trying WiFi calling if available or making sure that your router isn't rebooting at night or losing connection in the middle of the night (something that I experienced a lot with Cox at usually 1 or 2 AM every day).

I'd also check Sync/backup settings for data-intensive services, like Photo back ups, Samsung cloud, etc. that might be backing things up when on WiFi and at night. If your SD Card is corrupted or the reader is beginning to fail, that will also drain your battery, so keeping your phone card-free for a few days is also a good idea.

And another thing I'd recommend is that after your phone has been set up initially and all updates installed, go to your Application Manager, show system apps, find Google Play Services, uninstall updates, and let it re-update itself.

Remember, it does take a couple days for your phone to 'settle' after a factory reset, but this should be speedier if you don't load all your apps at once at the beginning.

 

[CWinkler]

Well, since you're doing a Factory Reset anyway, I'd say go that route but DON'T restore any apps yet. I know, it'll be painful, but other than Safe Mode and manually activating each app, this is the best way to do it. See how your phone behaves after a Factory Reset and no apps. That's your 'fresh state' picture. Then after a night's full charge, start adding your most used apps (if you can hold off on your not-so-common apps, I'd do that for now). See how it behaves. If the problem comes back, the list of apps you've installed lately is shorter and a lot easier to troubleshoot.

Also, from your pictures, your cell reception is really low, so I'd suggest either trying WiFi calling if available or making sure that your router isn't rebooting at night or losing connection in the middle of the night (something that I experienced a lot with Cox at usually 1 or 2 AM every day).

I'd also check Sync/backup settings for data-intensive services, like Photo back ups, Samsung cloud, etc. that might be backing things up when on WiFi and at night. If your SD Card is corrupted or the reader is beginning to fail, that will also drain your battery, so keeping your phone card-free for a few days is also a good idea.

And another thing I'd recommend is that after your phone has been set up initially and all updates installed, go to your Application Manager, show system apps, find Google Play Services, uninstall updates, and let it re-update itself.

Remember, it does take a couple days for your phone to 'settle' after a factory reset, but this should be speedier if you don't load all your apps at once at the beginning.

@SpookDroid, thanks! I've done the FDR without SD card. Other than Google, Samsung and MS accounts have only installed LastPass. Can't do anything about cell reception or WiFi cutting out, I live on a boat in a pretty remote area with limited reception. Motorola phones were usually OK, this is my 1st (now 2nd) Samsung. No control over CenturyLink router issues. I have an extender on my boat to boost the WiFi signal, but sometimes that even has issues. Will hold off as long as possible on reloading apps, and be methodical with those I install and timing. Will probably also put GSam on tonight, just so I have a track record of things.

 

[SpookDroid]

If you do get that installed and running, if you feel your phone getting too hot, open the report and see what has your CPU in use or a wakelock active. That should help narrow down the culprit(s).