iphone battery dead after ios 5 update

This seems about right 5% per 15 min of use thats about 5 hours of continued use.

I've been struggling with hot potato 3gs after ios5 upgrade (also have the lost calendar and contacts issues as well, which are ongoing.) Tried most of the suggestions found here and elsewhere, including turning off ping, none of which resolved the problem. Decided try Reset Network Settings last night and it's now a cool cucumber. That seems to be the only thing that made a difference for me (resolved the overheating, battery draining problem.)

Guys

I've had this problem with every update and here's what I have done to fix it everytime so far (including IOS5 - I did this last night and it has worked for me): -

Plug your phone into your PC and bring up iTunes

Synch your phone (back everything up)

Go to your phone summary page and "Restore to Default Settings"

Re-install IOS5

Re-synch all your apps and settings

That should reset your battery life

Oh and I always use Battery Doctor when I recharge.

So I've done all that, reset the phone settings, restored from backup, turned icloud off, turned off more than i had running under ios4 and i still only get 6 hours on my battery, 15 percent per hour usage in standby. Lost and confused. maybe if enough of us complain, Apple will release a fix or workaround?

I've been following this and the macrumors batterygate thread looking for solutions and believe I've fixed my case. Just adding anecdotal data to the discussion.

Hardware: iPhone 4S 64GB White through Sprint's website (in case batches matter).

I received the Phone on Friday the 14th, and proceeded to backup my iPhone 3G and restore that profile to the 4S.

On Sunday I went from 100% to the low 20's over a 6 hour period and only actually used the phone to watch a 4-5 youtube videos. I had not disabled any features or anything. I let the phone die completely before plugging it in for the night.

On Monday I went from 100% to 10% in a 9 hour workday period without any actual usage other than a couple texts about the battery drain to my wife. This is when I first thought that I had a battery issue and found out about the widespread issues. That night I tried resetting network settings, deleting email accounts and re-adding, turning off location services and eventually just restored the 4S firmware and reapplied a backup of the 4S profile from earlier that night. I ran the next day with location services completely off, bluetooth off, all notifications removed from the widget, iCloud off, and double checked that my email accounts had no reminders syncing and had push disabled with fetching set to 1 hour.

On Tuesday I went from 100% to 74% over a 9 hour workday period with the Monday night settings. And the phone in the same environment as Monday. Better but still not great. That night I bit the bullet and followed the recommendation to start a fresh profile. I synced my contacts to gmail, deleted network settings, then deleted all content and settings, then entered DFU mode and reapplied iOS 5. Synced my contacts back from gmail and resynced music/apps without a profile restore. I enabled location services but disabled all system services except compass calibration. I only removed stock and weather from the notification area. Am not sending diagnostics. iCloud still off, all email still set to fetch hourly. Bluetooth is still off.

So far today (Wednesday) I've only gone from 100% to 99% in the 2 hours I've been at work.

So there you go, anecdotal data for the pile.

I am experiencing the same frustrating condition, Upgraded my iPhone 3GS to iOS5 and the battery life has dropped to unacceptable. It was 100% when I left home yesterday morning. After 45 minutes in the dentist's chair it had dropped to 43%. I diasabled the iCloud, location manager, weather app, stock market app etc. and still the battery is wasted. (What is the purpose of this kind of "upgrade"?) My only solution is to have chargers everywhere: in my car, at my desk, at my bedside plus a mophie and a solio recharger. Surely there must be a better fix.

Even with constantly carrying a charger around, exhausting the phone's battery twice every 24 hours is just going to make the phone last around 8 months before the battery starts losing capacity. This is sort of unacceptable.. and It's definitely frustrating having to charge your phone at 15% immediately after coming home from a 8-5 work shift.

My anecdotal bit:

My phone took itself from 100% to 40% after 4 hours at work on Monday. I followed all the setting changes already given in this thread and managed to have it above 50% after 7 hours the next day.

Today the phone was off the charger from 8 to 6 (just now) and it dropped from 100% to 25%, the usage statistics said:

Usage: 3 hours, 33 minutes

Standby: 10 hours

Kind of frustrating. I'm moving to Apple from a dual core android phone and I was definitely expecting better out of the battery. I'm not even using cellular data, only WiFi, because Sprint gives such a low data signal that I'm worried that will negatively impact the phone battery.

My 3GS based ATT contract is up in a months time.

I have been thinking about moving to Android for a while.

After I bought the 4S for the wife, I tested her own exchange account and the battery really works fine on her phone. Lucky wife!

So for a moment I thought, why really go to android?

But since a lot of 4S users are also complaining and especially since my 3GS is absolutely of no use to me after the ios5 upgrade (because of this RAPID draining), I am now seriously thinking about ICE CREAM SANDWICH based android.

Good I have the old unlimited plan.

BTW I did go to the apple store and GENUISES out there told me the typical thing, "your phone is not under warranty, pay 79 for 3gs which has the old OS, and yes APPLE themselves have not given us an official way to downgrade the OS, blah blah"

Wondering how to downgrade this phone IOS using some official software tricks....

DirkSwizzler wrote:

...

So far today (Wednesday) I've only gone from 100% to 99% in the 2 hours I've been at work.

...

Update: I experienced a sharp decline in battery percentage after posting with some mild usage consisting of checking email on wifi and doing some VPN setup. After the 9 hour workday I ended at 75%. So it would appear that the fresh profile was unnecessary.

Turn on off all your mails acounts,gps, bluetooth, notifications, icloud, imessage, twiter, facebook, acounts, and turn on only cellular data and 3g. Charge your batteries till 100% at night. Unplug it from energy, reset your counters (cellular data and use), and go to sleep. When you wake up, go to see your counters.....

So, I got extremely tired of battery drain and I decided to start from scratch on my phone.

From inside of the phone, I went to Settings > Reset All Settings and Data and waited for my phone to be completely clean. I then plugged it into iTunes and configured it as a new phone.

After removing all the things I didn't need, (like advanced Location Services, bluetooth, etc.), I checked how well my phone was performing in terms of battery. Without any apps installed, just text messages and iCloud, the battery life fared well. I was no longer getting standby drain.

I then started to customize my phone and install a few apps. I was very selective as to what apps would go on my Notification Center and Location Services. I stayed away from Exchange (Google Sync) merely to establish a control for my experiment.

After installing Facebook and not allowing it to use Location Services... my battery drain issue came back. When Facebook was in my Notification Center, I started receiving the same battery drain I was getting before. Even when I took Facebook off of Notification Center, the drain would still occur. I'm really disappointed with the Facebook devs, I have strong reason to believe Facebook is having some sort of issue that is draining the battery.

Since then, I've uninstalled Facebook and I've been using Twitter and installing apps normally. The battery seems to be fine. I haven't bothered adding Google Sync to my phone as I keep hearing that its a huge battery drain. Regardless, this shouldn't be happening. Apple needs to address this immediately and pull apps that are faulty from the App Store. The Facebook app is absolutely atrocious... It's a pain to use and now has a battery drain problem.

I will be leaving more information as I keep toying with my phone. However, I advise everyone to start from scratch and see what works best for you. Not everyone has the same needs and the battery drain issue DID disappear after I deleted everything on my phone.

Cheers.

Sorry for double post, edited.

My wife has fb installed I will have to check this out myself when she gets home. I told her we needed to try and do a full restore, even though this is a brand new iphone 4 and wasnt upgraded from ios 4. Or was it? maybe the new phones had ios4 installed and were then updated by apple before they shipped out?

I have Facebook installed, with Notification activated for Banners, and I don't get the battery drain. So while it could be A cause it's certainly not THE cause.

thats good to know! I think what we are dealing with here is a result of bad installs of the os on phones caused by a bug in the os itself. Something isnt always being installed correctly when upgrading/install the os causing the cpu to ramp up its useage. Could be in the kernal ( the part of the os that links the software to the hardware)