Q: iPhone 7 battery drain

I Went to Apple Store and got mine replaced with a new one on iOS 10.0.0 and now it's working a lot better, battery lasts a lot longer but I haven't updated it to the latest so I'm just gonna leave it like this for Now.

What is the average battery life for you guys? I'm getting 7 hours of use from wifi internet browsing mostly and a little clash royale. Thanks about it. 7 hours is weak!

I'm using iph 6, after updating ios 10.01, my battery indicator always 100% and after a few hours using my battery drain.

I FIXED THE SAME PROBLEM ON BATTERY DRAIN ON MY iPHONE 7 PLUS! I had the same problem on my new iPhone 7 Plus 128gb phone running iOS 10.02 and here is how I fixed it!

First of all the way you know you have a problem (and also the way you know you have fixed the problem) is when you go to Settings>General>Battery and scroll all the way down and look at TIME SINCE LAST FALL CHARGE. If your usage time is the same as your standby time you know you have a problem and basically the iPhone is running continuously and not going into standby mode. THIS USUALLY IS BECAUSE AN APP ON YOUR PHONE IS MALFUNCTIONING AND YOUR PHONE IS RUNNING THE APP CONTINUOUSLY. You might get clues to this under the list of apps under BATTERY USAGE on same page but that wasn't helpful to me as it doesn't seem to show which app is running continuously.

Here is what I did to fix the problem and any one of these might fix it and I am not sure which one actually fixed it so here are things to try....

FIRST OF ALL MAKE A GOOD BACKUP BY CONNECTING YOUR iPHONE TO YOUR COMPUTER AND USING ITUNES.

1. If you are running Facebook on your phone then delete it and reinstall it as this app is one of the biggest culprits. Takes 5 minutes and might fix it.

2. Then do a soft reset....the way you do a soft reset on the iPhone 7 or 7 Plus is DIFFERENT THAN PREVIOUS iPHONES.  Due to the new home button requiring power to work, Apple has changed the buttons used to force a restart. You now need to hold the wake and volume down buttons at the same time. After a few seconds of holding in the buttons, the Apple logo will appear on your iPhone's display, indicating it has restarted, and you should be back in business. This takes only a minute or so..

3. I then "Reset all Settings" by going to Settings>General>Reset >Reset all Settings. AGAIN MAKE SURE YOU HAVE A GOOD UP TO DATE BACKUP DONE BEFORE YOU DO THIS. I didn't think this step did much and this doesn't erase content but you lose all your settings like wifi connections and passwords etc so i decided I didn't want to lose them all so then went to next step. This takes about 10 minutes.

4. I then connected my iPhone 7 Plus to my computer and restored my backup with iTunes. This takes an hour or two as I have a lot of apps and data.

5, I then went to Settings and scrolled down and turned off the "Allow Notifications" on each app that I could live without notifications. takes 10 minutes...

6. I then charged my computer fully and VOILA it was fixed and the way I know this is I went to Settings>General>Battery and scroll all the way down and look at TIME SINCE LAST FALL CHARGE and NOW THE STANDBY TIME IS MUCH HIGHER THAN THE USAGE TIME AND THE BATTERY IS WORKING FINE AND NOT DRAINING ANYMORE THAN NORMAL.

Sorry that i don't know exactly which step solved my problem but you can do this all in a couple of hours and it saved me from returning my iPhone! Maybe if others try these steps you could narrow it down and let people know which one worked. Reminder backup your iPhone to your computer before you do any of the major steps above. Hope this helps.

Thanks drkcope for this, however my iPhone 7 battery usage and standby have always been different so this isn't the problem with my device.

I Do believe there is something that is definitely running in the backgroun, but it's not being shown within the phone itself.

When I first got the phone, my biggest usage was coming from the message app, which I thought was weird. There is however, a lot going on now within this app itself; gifs and such that can be embedded into a text message. Maybe it's all these moving litttle parts that are to blame.

After 2 weeks dealing with this issue I've become numb to this truth. Maybe one day Apple will release an update that will solve this issue. Until then...happy charging y'all!

7 Hours! Considering some of us are only making it about 4 to 5 hours with a brand new iPhone 7 or 7+...I'll take 7 hours at this point.

You will really watch the battery drain when you're on a call. Talk about weak...

Yea, I turned some more stuff off, I'm up to about 7 and a half. Also not noticing much difference between LTE usage or wifi usage. I'm scared to see what kind of battery life this will have if I actually use most of the functionality built in like Siri and background app refresh. 3 hours? I may try to do a reset, and maybe a restore from backup. My last IPhone failed to backup properly so I had to start this phone from scratch.

ok and here is a better explanation of how to figure out if you have a iPhone battery drain problem based on usage vs. standby times...

"How to Test For iPhone battery drain

There is a quick and easy battery life test built into your device, if you do a little bit of math — the Usage and Standby times. Head on over to Settings > General > Usage and check out your times.

Your Usage time is how long you have actually used your device, and the Standby time is how long your device has been dormant in-between the times you’ve used it plus your Usage time. A better name for Standby time would be “Total Time since unplugged.” The key to look for is that your Usage time should be significantly lower than your Standby time, unless you have been using your device every single second you’ve had it unplugged. If this is not the case and your Usage time is exactly equal to your Standby time, you have a severe problem. The bottom line is that your Usage time should be accurate to how much you’ve used it since you took it off the charger.

So here’s the test: write down your usage and standby time, press the sleep/wake button (or lock button, as some call it) to put the device to sleep, and set the device down for five minutes. When you come back, take note of the change in time. If your device is sleeping properly, then the Standby time should have increased by five minutes and your Usage time by <1 minute 3. If your Usage time rises by more than one minute, you have a drain problem. Something is keeping your device from sleeping properly, significantly shortening the time it will last."

http://solutionowl.com/ultimate-guide-iphone-battery-drain/

I've experienced very poor battery life ever since picking up my iPhone 7 on the day of release and having restored a backup of my 6 onto it.  I do not use any heavy apps, just run of the mill mail and browsing mostly. Very little video.  I was typically finding that my battery would be showing less than 50% remaining by midday and by 5pm or so would often be prompting to go into low power mode.  And this is all with my already having changed my habits and switched background refresh off for ALL apps.

On Sunday, 2nd Oct I had charged my iPhone 7 overnight and woke up around 8:30am.   I used the phone for 1hr 26mins (not non-stop) and by 12:02 it prompted to go into low power mode showing 20% (all apps were shut, no background refresh, no hunting for wifi, nothing - just standby).  I took a screenshot.  3 minutes later (yes, 3 minutes) it went to 10%.

Now, I don't care whether it is a problem with my particular phone or with a particular batch of phones but frankly I do not have the time or inclination to mess around with trying to sort this problem out; IMHO the phone is patently unfit for purpose due to serious battery life issues that need to be resolved * by Apple, not me * and I have duly returned my iPhone 7 to Apple and obtained a full refund.

I'm now back using my 6, which was last charged 2 days ago and still showing 50%.

So in regards to your post - I unplugged my phone at about 5:45am & am typing this at 9:10 pm.  Usage is at 12hr 47 min & Standby is at 15hr 27 min.  Have NOT used the phone for anywhere near that time.  When I check battery usage for the last 24 hrs, it shows Safari at 44% with 3 min on screen.  Next biggest is Facebook at 20% with 33 min on screen.  And for the last 6 days Safari comes in at 35% with 1 hr on screen.  Safari is chewing up a huge amount of battery while not being used.  I had commented on another post about battery issues & have followed this one too.  I have done all the proper things (reduce background app refresh, location accuracy, brightness, no raise to wake) and also factory reset my phone (hence the 6 days battery use, not 7) to no avail.  Can't delete Safari & then re-install like you can with Facebook so I guess just wait for Apple to release an update?  I do have an Apple Watch so not sure if that will affect any of this but I don't use it heavily.  Previously had the iPhone 6 which had way better battery life - even when I downloaded iOS 10 for the 4 days I had it before getting the 7. 

I don't think it's the iPhone 7

I updated to 10.0.2 with my iPhone 6 and have immediately started having the same problems you describe

Here is another TIP I found that worked great to give me great battery life today on my iPhone 7. When i first took it off the charger this morning, I noticed the usage and standby time were both the same even though i wasn't using it....so about 10 minutes after I took it off charger i decided to switch battery to "low power mode".

That worked GREAT and put the phone in standby mode and i am happy to say almost 16 hrs later with 5 hrs of usage, and almost 16 hrs of standby I am at 56% without charging it all since the initial charge! see image.

Tomorrow I plan to not use "low power mode" and compare results.

I do tend to agree that it could be a problem with the iOS 10 as I ran into a similar problem on my iPhone 6 when i updated to iOS 10 and eventually fixed it doing similar things to what i posted above.

Hope this might help some.

Same issue. AppleSupport is trying but found nothing yet.

As a follow up if I fully charge my iPhone 7 Plus running iOS 10.02 and then immediately turn on "Low Power Mode" the phone goes into Standby mode and the battery lasts all day using it whenever I want. If I don't do this it does not go into Standby mode and the battery goes dead in a few hours! Thankfully I have a temporary fix that works fine but Apple please update iOS 10.02 to fix this problem!