Fix: iPhone 7 Battery Draining Fast

I posted my problem in so many places asking for help that I forgot everywhere I did it so after finally finding the issue and fixing it I wanted to post my experiences, now I can do just that here.

Finally found the Culprit this Wednesday after a month and 4 different phones. It was iCloud for windows installed in my laptop... Yes believe it or not.

I arrived Wednesday to my office but different than any other day I didn't turn on my laptop and immediately began working on a new project. When I checked my phone around 10am I noticed that for the first time in almost a month it was working normal at my office. I just remembered that the only thing different was not having my laptop on so to verify my new theory I turned it on and left it on besides my phone for about 30 minutes, when I got back to it, the battery standby and usage has increased 30 minutes each, so the problem started as soon as I turned my laptop on. After turning off again and verify that the issue stopped as soon as I turned I off I then moved to see what could have changed in my laptop right around the day the problem began.

It was an easy finding because I hadn't installed anything new on it for the past couple of months except iCloud for Windows PC looking to be able to easily transfer my pictures to my laptop. So I Uninstalled it and reboot the laptop and the problem disappeared for good. After 2 days of that I can confirm that at least in my case, that was it.

So if by any chance you have iCloud installed in your Computer, just get rid of that POS until Apple work on it. I notified Apple about it but who knows when it may get fixed if ever.

Thanks for your detailed post.

I was having the same Usage/Standby time issue and finally found the fix for MY iphone:

Settings, General, Cellular, Enable LTE, changing from Voice & Data to DATA ONLY.

Now finally no longer losing 20% worth of battery life every night.

Okay . I got the answer about saving battery on my iPhone 7plus . The main function of iPhone which draines battery was GPS. So I manually went through setting of all app & set location uses @ when app is running ONLY & I did off some of the location services for systems .. And that's it !!! It gives me a full day of battery on every IOS update...🙂

Hello,

I had the same issue in 10.2 , it appears that an app is using the phone all the time, so i closed all the apps using the multitask thingy and it worked, battery back to normal,

Hope this helps

This is the 4th phone in a row with the same problem. I had a 128GB iPhone 7+ Verizon Model back in October and it worked great for about 2 weeks that I had it, I decided to sell it and bough the Google Pixel XL until December 15th when I got another iPhone 7+, this time a 32GB T-Mobile version (A1784), it worked as expected for 2 weeks then suddenly on Dec. 28th when I got to my office the phone began draining the battery a lot faster than normal and when I checked the battery stats I noticed that the Battery Standby and Usage were increasing at the same rate, without even using the phone.

Confused about it, I even did a factory reset just before I left the office, so when I finally completed the restore process I was out of the office already. So it worked great again, as usual and the next day as soon as I crossed my Office's door the problem began, problem is that once it begins it doesn't stop. Fast Forwarding a week and trying everything possible (only thing that stops the drain is turning on Airplane mode, but then turning all the radios back one by one immediately starts the issue, every single one of them) Apple agreed to a replacement, for my surprise it had the same issue since the first day it arrived.

Tired of this, I asked my daughter to use the new phone and let me use her iPhone 7 that was working great, and as soon as I enter my office it happened again. I got tired of this and thinking that the only phone that didn't have the issue while I used it here was the Verizon one, I decided to buy a 256GB Jet Black iPhone 7 + Verizon version also, and guess what? It does the same. I've done 4 factory resets with different options, restoring a backup, setting as a new phone and installing basic settings, setting and a new phone and not setting anything, and all of them just did the same.

So as you can see, I'm out of ideas here, the only thing sure is that so far it just happens when I'm here at work, so it must be related to signal/towers/bands, but I have about 10 other co-workers with T-mobile and iPhone 6S and iPhone 7 and none of them have the same issue I have so that's what driving me crazy.

One more thing, once I leave the office it goes back to normal, but this is totally unacceptable that I must be re-charging all day decreasing my battery life span by a lot for something that seems to be affecting just me on 4 different phones in the last 3 weeks.

Any other ideas or suggestions? Pleeeeeeease.

It seemed like the battery on my new iPhone 7 was having the same issue. I reinstalled my Facebook app and did a hard restart on my phone and it seems to have fixed the problem. Hope this helps!

Hey.

i Think i found permanent solution. i did these steps then just in case updated my phone to ios 10.1 beta 3. Now i do not have drain issues. Last day i had nearly 24 hours of total heavyish usage. Before update, i couldnt even have 10 hours. Hope this will fix.

I had the same problem about 2 weeks ago, first I did a restore with an iCloud backup, that didn't help anything.

Than i did a full reinstall from scratch and the problem was solved.. until today, battery standby / usage again the same.

I did reset all settings in the general tab just now, I will keep you posted if it helped.

Greetings

Brent

Same problem here with my iPhone 7 Plus 256GB Matt Black..

Like everyone it started after 2 weeks, this was in september '16.

Did all the steps above and yes, it worked but after a few days the problem did return.

I did narrow it down to 2 steps to fix it for a few days.

1) hard reset the iPhone by holding down the lock button and Volume down - button.

2) When the iPhone is restarted fill in your passcode and then do a normal restart, holding down only the lock button.

3) Recharge your iPhone to 100% and your good to go for a few days...

I hope apple is going to fix this fast! Returning my iPhone for another one doesn't seem to fix the problem, did I read a lot.

I struggled with this problem for many months. Tried EVERYTHING, nothing worked. Problem with always come back a day or week later.

I am here to report that i updated to ios 11.0 GM two days ago and everything is working as it should. 'Usage' and 'Standby' are always much different and never the same.

Keeping my fingers crossed that this bug was fixed in ios 11! Will report back if the problem pops up again.

This is truly a lot of steps. This has happened to me before but I found an easier solution.

1. Close out all of the apps that are running in the background. ( YouTube , Instagram etc..)

2. Go to your settings—battery and scroll all the way down to see what apps have been running.

3. After I checked that, I turned my phone off and unplugged the charger from my home for 5 mins.

4. After 5mins, turn your phone back on and go back to your settings—battery and put your phone on low power mode. Battery becomes yellow instead of green or red depending on how much charge you have on your phone.

5. Then I turn the brightness on my phone on. It makes your phone looks orange.

6. Then I just leave it alone. Immediately my phone started charging. And hour and 30mins later my phone was completely charged.

I personally found this way easier and safer than all of your steps. I’ve tried it before and lost almost a quarter of my music.

same here.

The battery drain happen from time to time. And I can notice the phone quite warm to the touch. Even if I kill all the apps using App Switcher.. it doesnt stop the drain. The only fix is to reboot. After reboot, thing went back to normal... but it will come back maybe weeks later out of blue moon.

I was on a Iphone 7 32Gb... intially thought was my unit specific hardware issue. Just last week, got myself another 7+ 128Gb, and the issue happened again just a week later.

Tried multiple attempts.

1. Restore from iCloud -- doesnt work

2. Reset and Setup as new phone -- doesnt work

I too want to thank you desiadri for your suggestion! So far after 5 days or so still running well! I was getting ready to dump the iphone and go back to android with its crappy battery life, but it was still better than what I was experiencing with my iphone draining 6-8% per hour! I'm happy with my iphone again! I appreciate your posting this on as many forums as you can so we can all have it figured out! Hopefully Apple will too someday...

Hey.

Thanks for the steps. Could you please verify this is PERMANENT solution? Since mine works ok when I restart my phone. I dont know whats the issue, but starts again after while? Could you please check that too. Thanks a lot. i returned my iphone 7 plus and have same problem again. Dont know why.

I agree. Please confirm if this is a permanent fix. The same thing happens to me once in a while. I'll go to sleep at 100% and wake up with my phone at 60-70%. Most of the time, this is because I forget to close out of apps before I go to sleep. I've never had this issue when I close out of my apps. But it would be nice to not have to worry about closing everything out before I go to bed.

Much appreciated.