iPhone 7+ Overnight & Standby battery drain

[fabytmHD]

2% an hour would be a bonus for me! Was on 90% last night, 8 hours later when I wake up it's on 46%! Going to do a restore and start from fresh (restored from back up first time round) and hope that helps

Wow, that's rough! Keep me updated, I'm curious if the restore helps at all!

Just woke up. 7 hours of sleep on full charge. Phone at 100%.

Well, at least I know that a normal one doesn't drain battery overnight.

If I were you and I could afford to be without my phone for a good few hours I would connect the phone to iTunes and carry out an Encrypted Backup to the computer.
Next I would kill everything on the phone just like the day you got it with nothing installed.
Now leave the phone alone for a few hours and then come back and check the battery.
If the battery has run down at the same pace you then know it's a hardware issue.
If on the other hand it's not budged then you can be assure it's an app or more likely a setting that is the culprit.

Now you have a choice: either go back to your iTunes and restore that encrypted backup or build the apps and settings back bit by bit checking as you go on.

That's what I want to do tonight. Do you think a DFU restore would work better?

log off your icloud account for now and see if issue persists

Already did that, no perceivable difference unfortunately.

this is most likely an iOS 10 issue, and not an issue specific to the iphone7. some process is continuously running, which is why your usage is high even though your phone was idle. if you are familiar with xcode, you can easily see what apps and system processes are using the phone's CPU.

by any chance are you using an http proxy in your wifi settings?

I'm hoping it has to do with iOS 10.0.2 and will get better when iOS 10.1 comes out.

 

[Beards]

That's what I want to do tonight. Do you think a DFU restore would work better?

DFU restore will still take the last Backup you made.
To have your system restore your phone back to a byte per byte state including saving all your passwords etc an encrypted backup is your best answer.

 

[The Game 161]

Think mine drained 3% from 44 to 41

 

[indg]

before going through any restore process, close all the apps manually from the app switcher, make a note of the battery usage/standby times, put your phone to sleep, wait about 10 minutes and see if the usage/standby times increase equally. if usage doesn't go up, then you know it was a specific app that isn't behaving properly while suspended. if usage does go up, then it's some other system process.

 

[fabytmHD]

Well, I've DFU restored, only turned Battery percentage on, didn't log into iCloud or download any apps, set my phone to Airplane mode and left it unplugged overnight.

Here are the results. I think 1-2% would've been reasonable, 4% seems a bit too much IMO, especially when Apple is advertising 16 days of Standby!(4%/8hours -> 12%/day, which means it would last more like 8 days, so about half of what Apple says it should)

 

[msavic]

I'm on my second 7+ after exchanging the first one as it would lose 7-12% in standby over night in Airplane mode with zero apps and freshly restored as new.

The first night on my new 7+ and it lost 3% overnight with WiFi enabled and connected to a cellular network. Since this is the still the initial charge on my device and I have yet to actually fully recharge it, I'm going to hold my judgement until a later time. I have high expectations for the standby time as it is one thing that has been praised by so many people.

 

[fabytmHD]

I'm on my second 7+ after exchanging the first one as it would lose 7-12% in standby over night in Airplane mode with zero apps and freshly restored as new.

The first night on my new 7+ and it lost 3% overnight with WiFi enabled and connected to a cellular network. Since this is the still the initial charge on my device and I have yet to actually fully recharge it, I'm going to hold my judgement until a later time. I have high expectations for the standby time as it is one thing that has been praised by so many people.

That 3% overnight still sounds better than the 4% mine lost while having all radios off and no apps/iCloud account connected!

 

[The Game 161]

Don't most charge at night?

 

[fabytmHD]

Don't most charge at night?

I always charge at night and that is not the point here. How else would I test if the phone is draining battery while in standby for a long amount of time? I can't do that during the day as I use the phone, so the only way is to charge it before going to sleep and letting it unplugged during the night.

 

[DEMinSoCAL]

Lost 2% last night. Went to bed fully charged, and iPhone 7+ at 98% when I got up. Nothing set to "save power". Normal settings.

 

[will0407]

Wow, that's rough! Keep me updated, I'm curious if the restore helps at all!

Restored yesterday, closed all apps before bed. Was on 87%. Woke up 8 hours later, 49%. Have scheduled a call from apple. Can't book any genius bar appointments for within the next week at either of the two accessible apple stores which is ridiculous.

For info, my battery data suggests my usage since last fill charge has been 1 hour 4 minutes, and 12 hours 31 minutes on standby.

 

[rkuo]

Lost 2% last night. Went to bed fully charged, and iPhone 7+ at 98% when I got up. Nothing set to "save power". Normal settings.

You can't measure discharge from 100 pct as there is a very large range of actual battery charge within the "100%" level.
[doublepost=1476081896][/doublepost]

I went to an authorised retailer and service partner and they did the diagnostics test and they said it came out fine. If I could prove that it's dropping too fast, then they would send it to Apple, but I'm not sure I can convince them...

I have been testing my iphone 7 and with all the settings on my preferred settings I was draining 12 to 15 percent overnight. I'm still narrowing things down, but I did get it down to 2 pct overnight by:

1. Going into airplane mode
2. Putting mail refresh to manual
3. Turning off location services completely
4. Turning off background refresh
5. Restarting the phone before going to sleep

So perhaps that is a place to start. I'm slowly re-enabling services to try and narrow down how much each service is contributing to the drain.

 

[pdxmatts]

You can't measure discharge from 100 pct as there is a very large range of actual battery charge within the "100%" level.
[doublepost=1476081896][/doublepost]
I have been testing my iphone 7 and with all the settings on my preferred settings I was draining 12 to 15 percent overnight. I'm still narrowing things down, but I did get it down to 2 pct overnight by:

1. Going into airplane mode
2. Putting mail refresh to manual
3. Turning off location services completely
4. Turning off background refresh
5. Restarting the phone before going to sleep

So perhaps that is a place to start. I'm slowly re-enabling services to try and narrow down how much each service is contributing to the drain.

Good Plan

 

[The Game 161]

Decided to test it last night and it dropped from 100% to 98%. Can't complain with that.However it can be misleading as from 100% it will remain at 100% for longer than if it was on 99% for example.

 

[will0407]

Went to the apple store and they suggested a restore form DFU as the battery and system diagnostics didn't return any errors. Will see how it goes. the genius did suggest they'd replace it if that still didn't work.

 

[jkim3691]

Keep me updated! I am curious what the guys at Apple will do! I do agree that the drain you are experiencing is not normal.

I went to the Apple Store yesterday instead of waiting until my appointment on Tuesday because I had some time. The Genius ran the diagnostic and it passed but I told him about how I was sleeping with it off the charger and it would lose 15% during that time and that I'd tried hard resetting and whatnot. He went through the process of getting me a replacement and he mentioned how it doesn't always let them do so but in my case it did. He even noticed I had a screen protector on mine(I go caseless) and asked if I wanted a new one. I told him I was okay it wasn't a big deal but he said hold on and left for a second and came back and installed one of those Belkin ones they have for free. He installed the latest iOS on the phone in store and I went home and moved all my data to my phone, charged it at 100% and went to bed. I woke up 8 hours later and it was sitting at 98%. I can't say for sure it was a hardware issue but I'm just glad the problem is taken care of.

 

[metsjetsfan]

Something is definitely wrong with ios10 even10.1Beta.

Other phones like 6, 6S are having similar issues

 

[msavic]

I only used my phone for about 30 minutes to browse the web a bit in the morning and then left it sitting for the rest of the day. I am extremely happy with the standby time on my new replacement 7+. The old one would have been at 40% after all of that time.

 

[VSMacOne]

FWIW, I started seeing much better battery life on my 7Plus after installing 10.1.

 

[will0407]

Went to the apple store and they suggested a restore form DFU as the battery and system diagnostics didn't return any errors. Will see how it goes. the genius did suggest they'd replace it if that still didn't work.

Full charge was completed around 10:30am. 2 hours 45 mins of usage and 12 hours hours later I'm down to 18% before bedtime. I put it on low power AND airplane mode at 18%. Woke up at 5:49am. No power.

I forgot to screenshot how my apps were organised so given that the DFU restore has had no effect, I'm just going to restore from back up this morning so I can have it back to how I want it even if the battery is sh*te. Will head to the apple store first thing tomorrow although the genius did advise to call ahead to make sure they have replacements in stock.

 

[miss.manson]

Yeah I'm pretty sure yours is defective.

 

[rkuo]

So far the biggest offenders overnight on my iPhone 7 have been:
1. Paired Apple Watch - 6 pct - I leave my Apple Watch docked in another room so perhaps this has something to do with it, but regardless, it's a lot more than usual.
2. Non local Wifi - 2 pct - putting a local access point in my bedroom reduced idle consumption. My wifi ap is not that far from my bedroom anyway, but apparently it matters.
3. Mail fetch every 15 minutes - 2 pct - vs manual fetch. push would probably be more.
4. Location services - 2 pct - this depends on what apps you allow to use location. I think some really abuse the heck out of this setting.

Baseline nightly drain I have down to a more normal 6 pct now. Disabling everything I could got me down to 2 pct overnight.

 

[tembelreis]

Hi all,

Did anyone get the bottom of this problem?

I have 7 + and batery performance is bad. I am sure it was much better first week or so. The real tell is on airplane mode. 8 hours eats about 13% battery with zero use. Wheras my wife''s 7 keeps 100% at the same time. I did take it to apple and they agreed to change it but they don't have any in stock.

After I tried everything I also ended up restoring from itunes with no back up pull but still no luck. I tried 10.1 as well and but that makes no chnage either. The phone shows home & lock screen eats lots of battery.

One last thing I will try is do another clean install and and test it with nothing on the
Phone.
[doublepost=1476617503][/doublepost]Hi all,

Did anyone get the bottom of this problem?

I have 7 + and batery performance is bad. I am sure it was much better first week or so. The real tell is on airplane mode. 8 hours eats about 13% battery with zero use. Wheras my wife''s 7 keeps 100% at the same time. I did take it to apple and they agreed to change it but they don't have any in stock.

After I tried everything I also ended up restoring from itunes with no back up pull but still no luck. I tried 10.1 as well and but that makes no chnage either. The phone shows home & lock screen eats lots of battery.

One last thing I will try is do another clean install and and test it with nothing on the
Phone.

 

[fabytmHD]

I have DFU restored my phone as new, didn't install FB(only Messenger, I know it also drains the battery but I use it quite often, so I need it) and the battery has gotten a little bit better. I get closer to 10 hours of usage, although I still don't find standby to be stellar(drops quite a bit sometimes without me using it). The only thing I do differently is to always force close Messenger after I use it and I also have Hey Siri off.

 

[cc999]

I'm having a similar problem with my 4.7" iPhone 7. I felt the battery was draining suspiciously fast while in standby although I can get through a day on one charge fairly easily. I tested it twice overnight and it drops around 2% per hour which seems a little unusual. So an average night I sleep about 7 hours. About 14% will be drained from the phone doing nothing by the time I wake up. I scheduled an appointment with the Genius Bar next week.

Thats not right, my iphone 7 plus - Verizon - Matt Black - 256 gb model goes from 10 PM to 7 AM with 0 battery drain.
Its fantastic, no battery drain at all. This is every night. I love this phone. 100% at 10 PM and 100% at 7 AM.

CC