Q: IOS-5 battery power drain issue

It kind of blows my mind that people find this thread and don't even read it to see if a solution was found....

I'm glad to report that i'm now on 22 hours and 2 minutes of standby and still at 49% battery with 3 hours and 18 minutes of use. Mostly streaming music and the rest phone calls. I even used google maps to navigate once today.  DO NOT CRIPPLE YOUR PHONES! I am using default settings on everything wifi bluetooth and location services are on, photo stream and find my phone. And i also found and added my exchange email account last night so it is NOT exchange based or any other app on the phone. Just do a Firmware level "black screen" restore using Itunes 10.5 and your problems WILL be gone. stop turning off features, you are carrying an iphone.......

Hello everyone,

I was having similar issues with my iPhone 4S battery life, although it wasn't an everday occurance.  Somedays it would drain 1% every few minutes and other days it was fine.  It seemed like there was some sort of process running in the background that would drain the battery when the phone was in Standby.

Luckily, I was able to solve my particular issue and it solved the battery life issue for me. It had to do with a calendar event running in the background. Please check these two threads and see if this fixes your issue. Hopefully this will help some of you out.  A quick way to check is to look at your pull down notifcations and see if the calendar looks "jittery" at all.  Also, unanswered calendar invites caused a problem for me as well...

https://discussions.apple.com/message/16452965#16452965

https://discussions.apple.com/message/16456738#16456738

- JR -

My iPad battery is going down fast under iOS 5

What is going on?

This might be a key to the answer. My iPhone3GS has been fine with the upgrade to iOS5 until 11/1/11. All of a sudden the battery starting draining before my eyes. I also noticed the "jittery" behavior in the Calendar section of the pulldown Notifications.

I had 1 outstanding meeting request which has now been accepted. It will be interesting to see if this changes the drain on battery life.

I read that Apple will issue an update in a few weeks to fix this.

Just a note in the interim, I find that charging the iPhone with your iPad charger greatly speeds up the charging process.

I have also problems using iOS 5 on my 4th generation iPod Touch 32G. My problems include LowMemory, battery power drain (faster than when using 4.1.x OS), hiccups and more.

Take a look at this post:

http://forums.macrumors.com/showthread.php?t=1252015&highlight=

I don't think there was an issue. I have 5.0.1 installed last night and it didn't change anything for me.

My 4S was charged to 100% about 14 hours ago. Now there is 72% left. Didn't use it much, but I thought it's normal considering dual CPU and GPU and plenty of other new features in IOS 5...

Well I feel like everyone I know who updated to ios5/ got an iPhone 4s has a battery drainage problem especially on standby. We tried everything from turning off auto timeline to gps locators not use directional reminders or even push for emails nothing seems to help. I think everyone has problem but a lot are not reporting it and some (who didnt own an iPhone or iPads before) don't know if it's their usage or a problem. It has just been acknowledged beta.1 has been released hope it'll take care of the software bug...

Hi,

The update, who appears in few weeks, will fix problem with battery but also notifications who consume a lot of energy, and another things, that's sure.

Wait and see...

Have a nice day

Ok here I go:

My new 4s, at first it would last at least 3 days, I could have pushed the limits a bit untill the 4th day. Normal use including wifi, 3G, twitter, facebook, newspapers (I turn stuff off when ready)

After I used bluetooth the first time the fun was over. Even now when I disable bluetooth after use the battery life is a problem now. I charge every day overnight. Just like my 3GS that I used for 2 years now. After I used my navigation software for the first time on the 4S same problem as above with bluetooth so it made it worse. I disabled the location stuff thats I do not need and push etc etc. I refuse to disable everything, because it is a smartphone indeed. I close every program after use, also from multitask.

I tried to contact apple to tell them about the bluetooth problem, but thats a mission on its own so not going to try that again. I guess they will find out for themselves.

My 3GS after installing IOS5: No real battery problems, but crashing apps because of lowmem.

My lady and her 3GS: Bad bad battery problems and lowmem problems. Battery drains fast and she does not even use location services, push, bluetooth etc etc. Just whatsapp, facebook, ebay etc for some shopping of course). She goes to bed with over 50% battery en around 3/4 o clock (diagnostics tool) the phone shuts down. She wakes up annoyed because the alarm did not wake her up. Since I installed IOS 5 on her phone it of course became my problem Going for a fresh install this week.

Mine fully discharged overnight, after installing IOS 5.  Never had a problem prior.

I had a few sporadic battery-drain issues with iPhone 4 and iOS4. Try this. Let the battery run down fully to 0% so the phone shuts off. Then recharge fully. It's always worked for me.

Updating to iOS5 hasn't resulted in any battery issues for me.

I have no battery life issues using iOS 5 and iPhone4s.  I also am careful to not use the iphone constantly.  I dont expect my Apple laptop, or iPad battery to last all day with heavy use.  I do not expect the iPhone 4s to last all day with heavy use.  I get a very appropriate amount of battery life based on how much I use the iPhone.

iOS 5.0.1 has fixed this issue.

I noticed my iPad2 draining overnight (while it was unused). I have Push, iCloud, WiFi backup, all turned on. It happened on two different random days. Can't get it to replicate, but now I'm not trusting Mr. iPad2 so much for getting work done on trips or away from the office during the day...

No problem on my iPhone 3GS.