Battery Drains in iOS 8.0.2 iPhone 5s

I have the same exact problem with my iPhone 5s. Since upgrading from iOS 7.1.2 to iOS 8 and now 8.0.2, my battery drains very fast and the phone heats up more than ever.

Like you, I close all my apps on a regular basis, but the problem persists. Here are some of the steps I tried that did not solve the problem (not listed in any particular order):

- turned off Location Services for apps that don't need my location (which is most of them)

- turned off Background App Refresh for apps that don't need it (which is most of them)

- performed several hard reboots and regular power off/restarts

- turned off all System Services except Find My iPhone

- turned offSend Last Locationfor Find My iPhone

- turned off Share My Location

- reduced the screen brightness

- set Auto-lock to 1 minute

- changed my email from Push to Fetch every 30 minutes

- synced with the latest version of iTunes on my laptop

After all those steps (and probably a few I can't remember), my battery is still draining way too fast and the phone is heating up too much. It is unacceptable. I need Apple to release a fix for this ASAP.

Guys,

I Need the phone for work, I couldn't wait until apple decides to solve it, so I decided to downgrade to iOS 8.0.0, at least it doesn't drain my battery THAT MUCH.

there are plenty of guides on the internet, but basically:

1) backup everything (all your data will be eased during the downgrade, no questions asked!)

2) Disable Find My Iphone

3) download the iOS 8.0.0 from Apple web site:

iphone 5s urls: (check the internet for iphone 5c, 5s, ipad...)

(CDMA): http://appldnld.apple.com/iOS8/031-05446.20140917.vuup2/iPhone6,2_8.0_12A365_Res tore.ipsw

(GSM): http://appldnld.apple.com/iOS8/031-05671.20140917.dyJlj/iPhone6,1_8.0_12A365_Res tore.ipsw

4) connect iPhone 5s to a computer with last iTunes version

5) Click in your iPhone name, hold Shift (in Windows or Option in Mac) and click "Restore"

6) It will ask you to locate the iOS file, selec the file you just downloaded and wait until it finishes...

7) Now you have iOS 8.0.0 back (thank god!)

this should not void your guarantee since this procedure was authorized by apple because of the problems with iOS 8.0.1.

Actually it does, because they are not physically the same - they support different LTE Bands, for example, and even different communicaiton protocols like GSM or CDMA, UMTS and/or TD-CDMA (LTE is the same for all).

Which means they have 6 different versions of code to run it.

These are all the different versions of the 5S... (http://www.apple.com/iphone/LTE/):

Model A1533 (GSM)
Model A1533 (CDMA)

Model A1453

Model A1457

Model A1530

Model A1518

Again, it is weird, that you guys have so many issues. It didn't even make the news on e.g. Appleinsider or 9to5Mac, that 8.0.2 is causing battery drains. So it seems there is a limited number of users, unfortunately with this big issue.

And I am here with a 5S that works just as good as with 7.1.2.

BTW: the same code needs to run on all the models of 5, 5C, on all the models of 4S and all the models of 6 and 6 plus. Thus, this code is running in fact on tens of slightly different phone models....

In any case the whole this thread is almost becoming useless, as we will get 8.1 next week and we will meet again in a new thread called "Battery Drains in iOS 8.1 iPhone 5s"... And maybe this time I will be the one with the issue of battery drain.

Contact AppleCare or arrange to have the device brought into an Apple Retail Store. Generally speaking, with a continuous power boot what would resolve this issue would be something called Recovery DFU Mode. This will force the device back into factory default settings, ridding the device of whatever repetitive cycle it may be going through in error.

Back up and restore your iPhone, iPad, or iPod touch using iCloud or iTunes - Apple Support

I would try those steps. Following the instructions for recovery may force your device into the right state.

Best of luck 🙂

Exactly same problem here.

I disabled everything (LTE, WIFI, BLUETOOTH, AIRDROP, GPS and ALL LOCATION BASED OPTIONS, BACKUP, FIND MY IPHONE, BACKGROUND DATA...). And it is still draining my battery like ****.

I (and most people) can't afford to be without the iPhone during work.

Please fix ASAP!

Exactly same problem here.

I disabled everything (LTE, WIFI, BLUETOOTH, AIRDROP, GPS and ALL LOCATION BASED OPTIONS, BACKUP, FIND MY IPHONE, BACKGROUND DATA, screen brightness is in minimum with auto-dimm disabled...). And it is still draining my battery like ****.

- Using iPhone 5s in airplane mode while listening to music seems to reduce a lot the power drain.

Myself (and most people) can't afford to be without the iPhone during work.

Please fix ASAP!

I had installed iOS 8 and all was great! Battery actually seemed to last longer. I know these are "subjective" perceptions, but I think we all can tell if the percentage of battery lingers longer on a set amount, or precipitates every time you do anything on the phone.

Then, I installed iOS 8.0.2 after skipping 8.0.1 given the many reports of issues. My battery has been a disaster ever since. I cannot keep my phone open more than a minute without seeing the percentage drop dramatically. It's a miracle I get to 5 PM with my phone alive. I used to be able to get home and not charge my phone till bed time and with plenty of battery left.

I have not changed my habits either.

To me, it seems like it has to do with the Health App, since my battery was fine with iOS 8 and that is the only functionality I am aware of that was activated after iOS 8. This is just speculation, so I HOPE THEY FIX THIS QUICK.

The same thing is happening to my coworkers, and I recall similar issued of battery drain last year when updating to iOS 7 - which were eventually fixed. I hope this is fixed soon too.

I'm quite sure they know this is an issues which needs to be resolved.

Someone somewhere screwed up. My phone has been acting funny ever since I upgraded from 7.1.1 to 8.0 to 8.0.2.

Battery is a major issue. I have to constantly walk around with a charger. I can barely hold a charge for 4 hours where I was averagely holding the charge for 8-9 hours.

I don't see a point in closing all services when I would like to use these features and they are provided with the phone.

Like these phones are not cheap in comparison with what's available in the market and such major issues are to be dealt with as severity 1.

Anyhow I hope they resolve this issue asap.

Just thought that I would add my two cents ... I am experiencing the same battery drain issues as the rest of you. This is the first time I have experienced so much difficulty with an iOS update. The battery drain is actually the least of my concerns right now since I can't open some apps, download from the App Store/iTunes, or go two minutes without iCloud asking for my password. Still, the battery drain is an issue that needs to be solved. Otherwise, there may be a mass exodus of Apple users.

I am having the exact same problem. 8.0 seemed to work well, skipped 8.0.1 update, updated to 8.0.2 and my battery is draining fast. Lost 20% without using it in about 2 hours this morning. Also having problems with my email not sending my notifications or updating until I force it. Please fix this 8.0.2

same, upgraded to 8.0.2 from 8.0 this morning, phone felt warm/hot earlier and now battery at 5% dropping very suddenly..

didn't notice any difference with battery between ios7 and iOS 8.. wifi also seems slow

edit - I'm on iPhone5 not iphone5s

I had installed iOS 8 and all was great! Battery actually seemed to last longer. I know these are "subjective" perceptions, but I think we all can tell if the percentage of battery lingers longer on a set amount, or precipitates every time you do anything on the phone.

Then, I installed iOS 8.0.2 after skipping 8.0.1 given the many reports of issues. My battery has been a disaster ever since. I cannot keep my phone open more than a minute without seeing the percentage drop dramatically. It's a miracle I get to 5 PM with my phone alive. I used to be able to get home and not charge my phone till bed time and with plenty of battery left.

I have not changed my habits either.

To me, it seems like it has to do with the Health App, since my battery was fine with iOS 8 and that is the only functionality I am aware of that was activated after iOS 8. This is just speculation, so I HOPE THEY FIX THIS QUICK.

The same thing is happening to my coworkers, and I recall similar issued of battery drain last year when updating to iOS 7 - which were eventually fixed. I hope this is fixed soon too.

I Wanted to add that WIFI ALSO DOES INDEED SEEM TO GO ON AND OFF A LOT! of course battery will drain if I is constantly trying to look for connection every minute!

not the right feed, but keyboards suck and super buggy...

An ecosystem is worthless without a properly functioning device.

I am having this problem on the iPhone6, but the battery shows more than 50% life. My phone is on a continuous reboot. This started after I updated to iOS 8.0.2. Is anyone else having this "reboot" probmlem with the 6?

When I updated to iOS 8, everything was okay for me, too. The issues began with 8.0.2. Before the update, I would still have 20-40% battery left at night after using my phone all day. Since the update, I am lucky if my phone hasn't died by the time I go to bed at night. Also, the phone gets hot if I use it for an extended period of time (i.e. taking pictures). I haven't heard anything about a software update being released anytime soon ...