Battery Drains in iOS 8.0.2 iPhone 5s

So many people with the same problem, and apple seems to ignore it... and support denies it!

iPhone battery always sucked, but...

iOS 8 drains battery more than others, and...

iOS 8.0.2 turned our phone useless.

I updated my Iphone 5 from ios 7 to ios 8 and it was a disaster. My Battery drained from 100% to 15 % in less than 4 hours with ZERO use I updated to iOS 8.02 and the battery drain improved just a little. It drained from 100% to 15% in 5 hours with very light usage (internet browsing lasting 5 minutes at a time, zero camera use, no streaming, LTE on, very light call usage).

At first I turned off WiFI, LTE etc but still drained like a pig.

I finally stop the atrocious battery drain and got nearly the same battery juice using normal usage by tweaking the following:

I turned off :almost all the apps except for a few that access "share my location" in "Location services"

I also turned off the following in "System Services" - Location Based iAds, Setting my Time Zone, Share my Location, Spotlight Suggestion, and Wifi Networking"

I turned off Diagnostic and usage

I turned on "Limit Ad Tracking"

I turned off Background App Refresh

Now my battery drain is acceptable. However, I noticed whenever i leave the WiFi and LTE on at night and when I wake up in the morning (8 hour sleep) i still get full - 100% charge. But if I turned off WiFi and LTE at night and by morning I would be at 85% from 100%

Good observation! I also noticed that in iOS 8.0.0, if wifi / let is turned on, battery lasts longer!

(*** did developpers do in iOS code?)

Same issue here. I upgraded my 5s to 8.0.2 yesterday and now it won't keep a charge for more than an hour. I need my phone for work so this a serious issue that Apple needs to fix. As I can see by the forum I'm not the only one having this issue.

omg i am not alone for this problem, i have sam issue my battery after upgrade to ios 8 darained so fast like liquid sh1t 😟

I am a work as a telecommuter, which means I work for a corporation from a remote location. I use my iPhone for business. I am on call 24/7 and must take my phone with me everywhere I go. I have changed many of my setting as suggested in other articles and threads and have managed to eek out a little more time from my battery life, but some things like email push can't be set to manual because I need to get URGENT emails as soon as they arrive in my inbox. They can't wait. This is my job.

However right now my phone can't go unplugged for more then about 4-5 hours, not even long enough to do dinner and a movie. You can't call it a mobile phone if it always needs to be plugged into an outlet. What good is a phone that is always on life support.

This problem wasn't a surprise, it existed in the beta. Why they didn't fix it before rolling it out live to all I can't even begin to understand. Apple needs to fix this and fast otherwise the phone that was once great for business, and I recommended often, will no longer be a phone that is good for use by working adults.

Our contracts are coming to an end pretty soon and we were just going to automatically upgrade our 5's to the 6 and 6+. If this battery issues doesn't get resolved pretty quick we'll be looking at probably getting Samsung phones.

As I have seen, most find wiping their iPhone clean for a major iOS release as too cumbersome. I understand it might well be.

(btw, the 5000+ emails to copy over, over a good wi-fi - how long will that take? 10mins max? is it important to have them all at once back on your phone?)

I have been going through 3 releases of iOS (6,7,8) and each time somebody is complaining about the battery draining, soon after release.

That being said, and I will not deny that some of you have issues, installing a new major release of iOS on a previous version with a lot of apps (are you using them all, really?), which are not necessarily updated yet to the new OS version, might cause issues which are out of Apple's control.

Typically battery drain and heated phone are due to non-Apple apps misbehaving and running the processor at full speed in loops.

The new battery consumption overview in iOS8 actually will let you soon identify what is draining the battery the most.

If you don't want to wipe the phone clean, how about one trying of the following:

1) back up (both on iTunes and iCloud to be extra sure - and yes, you should get rid of all the pics and music on your phone, as well as all those apps you *never* use, which you should already have saved on your PC/Mac already - BTW, not a good idea to keep a single copy of those pics on the phone only...), then restore the iPhone with iTunes (which first wipes clean the phone, then installs the latest version of iOS) from the back up - after half hour/1 hour, the phone is like where you left it, but the iOS has been installed brand new from scratch and not on top of the existing iOS version;

2) or update the iOS (if your iPhone is full and complains about space - do some necessary spring cleaning or install from iTunes!!), and then perform a "reset all settings" (NOT "erase all settings and data"!!!), and after reboot, you surely need to setup a few settings, but at least no apps will have already started using GPS, and background app refresh and so on. It will be like you have installed from scratch, at least as far as the overall iOS settings go.

The 2 above, not quite like a full complete wipe, should get rid of most battery drain problems. If it worked before with iOS7, it cannot simply not work anymore for a hardware problem with iOS8, and considering that Apple has something like 4 phone models to take care of, the chances of non Apple apps causing the issue is *extremely* likely (many app developers are slow in updating the apps, and if they do, they might not even follow all recommendations or use the latest features offered by the iOS to actually *save* battery - e.g. the updated location services settings).

I too am having an exteme battery depletion issue on my 5s. The problem started simultaniously with the roll out of the new IOS update. At that point, I still had the old IOS7. Apple has said that unbeknownst to me the auto refresh of apps was then initiated on my phone. (I alsway shut down all applications after use) on my first visit to Apple Genius Team they updated my phone to IOS8, re-set to manufacturer settings & checked my battery which was shown to be of very good quality. I then went home as as advised, did a back-up from icloud once conmected to wifi. After getting to 100percent, I unplugged and monitored my phone. The battery still drained quickly! I played music for 1 1/2 hours and the battery level dropped by almost 30 percent!!! I always play my music at the gym during my 4 hour work out and my battery level never dropped like that before!. 2nd trip to Apple Genius Team today. Advised battery good..turned off my apps running in auto refresh. Still depleting. I have major issues with my iPad air as well but know they are working out the kinks. However,as I don't drive and walk most places, I need to have a reliable phone. Right now I have to turn my phone off and only turn it on when I need to make a call. I don't dare use any apps now or any features of the phone as I cannot afford to have it die whilst I'm out! If I wanted a ohine only for calling, I would have bought bottom of the barrel phone!!! Trip 3 to Apple Store being booked tomorrow!

Still figuring if it actually works but i reset my network settings and privacy/location and seem to have improved battery life. By putting the phone in airplane mode the other day and having the battery last i figured network settings might be the issue. Anyone else willing to try?

After years of using iPhone one after another I'm starting to belive apple is intentionally doing this! To upgrade! My less than a year iPhone 5S which had excellent battery life now only lasts 2-3 hours max after installing this spam IOS 8.0.2 what is the meaning of this??? Upgrade your phone or die? Same apps same usage pattern didn't change anything!

Hi, try switching OFF the automatic downloads for Apps, Music, Books and Updates.

Had same problems with battery draining and phone heating up.

after turning it off, so far so good.

I have it always OFF (and all other kinds of downloads, connections, services, backgound services, etc... also OFF). Battery still drains like crazy.

At least in my case I wiped my 5s and set it as new phone.

I testesd it without download any apps, for a whole day (iOS 8.0.2), battery drained even in standby with airplane mode ON and ALL SERVICES OFF.

Then I downgraded to iOS 8.0.0. Again, wiped and set up as new phone, tested it for 3 days without downloading any apps. Battery still drains more in a bare new iOS 8 than in my iOS 7.1.2 used to drain while using all my apps and listening to music.

After googling a bit a found this odd suggestion of leaving WIFI always on, which would make battery drain DRECREASE. It sounds creepy, but it actually works!!! Leaving 3G/LTE ON seems to have the same effect on "preserving" battery life.

Either Apple developers ****** on their hands while programming, or NSA demmanded Apple to create a way which would make iPhone users to be ALWAYS ON and Apple did (make battery drain like crazy if offline, then everybody will be always connected).