Battery drains faster since 4.3.5 iOS update

I have the same problem, updated yesterday and this morning my battery went from 100% to 85% in just 3 hours ...

I have been having issues with battery life since July 2011. I have been to the Apple store. They ran a diagnostic....nothing wrong with phone or battery. Just had to update iOS to 4.3.5. Phone cuts off at different battery levels but mostly between 45-50 %. I have done hard resets......no good. Restored phone back to NEW at the advise of the Apple store rep. Still having issues. Seriously think its a software issue but how to fix it? Battery seems to be dead but when I charge its goes to around 45% (for example) pretty quick.

I need help. This is so very annoying.

I have the same issue with my iphone , batter drain with 5-6 hours.

GTA 5 Cheats

my iphone 3gs is experiencing drastically shorter battery life after the 4.3.5 update. I can't even make it a full day on a single charge. My phone, my software, my config, my usage habits have not changed at all, only the 4.3.5 update. This has to be a bug in the OS. I've started disabling location, notification, bluetooth, and killing apps just to get through the day. this is not acceptable, we need a patch!

It is NOT a bug in the OS. It is something that happened during the update process. There will be no patch. You will have to search the forum for solutions; there are hunderds of posts going back 4 years on how to resolve the problem. And turning off location services, notificaitons, bluetooth and killing apps aren't among the solutions.

You could start by reading the forum thread you posted to.

I HAVE read the whole (and some other) threads! I don't have an exchange account set-up (I do have pop3 account set-up which works fine).

My battery drain (from ipad 2) came suddenly, I have had the ipad for 2-3 weeks now and using it on regular basis. It was updated tot 4.3.5 from the start.

This morning it was fully charged and after 25 min of reading (only ibooks was running) my battery dropped 25% to 75%!!

I have blocked itunes, ping, gamecenter etc, but it stil drains about 1% per 3-4 minutes, running NOTHING.

I have done a factory reset.

I have done a hard reset.

I don't know what to do.

I've closed e-mail accounts (including contacts, mail, notes... all synchronisation services), notification services, GPS, 3G & Cellular services, WiFi and Bluetooth.

Then re-activated each of those.

And everything is ok.

(Most probably it was coming from mail accounts).

By closing, you mean restricting it? or deleting it?

I'm also going to let my ipad 2 run completely out of battery, hope that'll reset something.

iPhone 4 connecting to Exchange and GMAIL used heavily with decent performance prior to 4.3.5 upgrade.

I am tech and have read this and other forums on a solution. I've completed the following:

1. rebooted, many time

2. reset pressing power and home

3. restored from backup

4. removed all mail clients, rebooted and added back

5. restored as new (no additional apps or mail clients)

None of which has resolved the rapid decrease of battery life I see since the 4.3.5 update.

Prior to update my iPhone4 would go all day to ~30-40% and I charge it over night. Post 4.3.5 I can actually watch the battery % decrease over a 10 minute time frame form 100 to 99 or 98 with only the screen on at low level. This is much faster than before.

While the update may be fine, it's obveously changed the way a core process is behaving. As I've read it, there is no solution I've not tried. I welcome ideas but I don't see a solution.

Thank you and good luck out there.

The only problem with your analysis is that there are posts almost identical to it after every release for the past 4 years. Here are a few examples:

Battery Meter/Life Problems with 4.0.2
4.0.2 guzzling my battery. Your's too?
4.0.1 battery life
Battery runs out very quicky in iOS 4.0.1
Battery nearly nonexistant after 4.0 upgrade
Dead battery after few hours on standby using 4.0 software
3.1.3 battery problem
OS 3.1.3 battery issues
3.1.3 upgrade - shortened battery life?
Battery life cut after 3.1.3 update on iPhone 3G
3.1.3 Firmware is a battery killer - how do I back out this upgrade?
Poor battery life with iPhone 3G running 3.1.2
3.1.2 EXTREME battery drain - what gives?
3.1 Battery nightmare
iPhone 3GS with fw 3.1 – battery life gets even worse
Battery Issues with 3.0.1
BATTERY drain with 3.0
upgrade to 3.0 drains my battery
Battery Drain after Update 2.2.1
Battery Life Radically Decreased after 2.2.1 Firmware Update

Hi,

I've a similar problem: Battery decreases very rapidly.

The problem occured a few weeks ago.

I think the iPhone doesn't go in Standby-Mode properly, because the 'Usage-Time' in Settings->General->Usage increases altough the iPhone is in Standby and Flight-Mode and all Apps are closed (also in the Multitasking-Bar).

Yesterday for example it showed a usage-time of 43 hours but i used it for only about 5 hours...

Is this an iOS 4.3.5 problem or a settings problem?

Please help...Thanks

Neither. It is an application problem, some application that is trying to send data and failing (possibly because it is in flight mode). Closing applications in what you called the multitasking bar (which is NOT a multitasking bar, it is a recently used applications bar) does not guarantee that their background processes terminate, and it does not clear queued messages that applications attempted to send before being terminated. For 3rd party applications their background processes should close when you remove them from the recently used ribbon, but system processes (mail, app store, ping, iTunes store, messages, phone, calendar, contacts) continue to run in background ever if you remove them. Also, any apps that get notifications will relaunch when they receive a notification.

If you have a Push email account try deleting it, rebooting the phone, and adding it back. This is the most common cause of the symptom you see. Also, enable WiFi and cellular data. This will allow any queued messages to be sent.

Lawrence Finch wrote:

It is NOT a bug in the OS. It is something that happened during the update process. There will be no patch. You will have to search the forum for solutions; there are hunderds of posts going back 4 years on how to resolve the problem. And turning off location services, notificaitons, bluetooth and killing apps aren't among the solutions.

You could start by reading the forum thread you posted to.

It's not a bug but 'something' happened during the update?! Please. If something breaks during an update, how can it possibly be anything other than a bug? Apple are obliged to leave people's phones in the state they were in BEFORE the update. It's like taking your car in for an oil change and getting it back with the radio not working. And why should the owner then be expected to remove the radio, take the fuse out, put a new fuse in and reinstall the radio to get it working again?

5 pages of complaints about 4.3.5 and similar complaints dating back 4 years. It's not an impressive track record is it?

Maybe IOS5 will improve things by [finally] allowing autonomous updates.

For those with battery troubles. Go through your settings and look for any spinning icons that are trying to contact a remote server. After a previous update I found the tethering connection was constantly trying to connect to 'something' I never even configured in the first place, which was obliterating battery life.

Since 4.3.5, my "MobileMe" account has been constantly trying to verify. It was verified before 4.3.5, so the fact it unverified itself during the 4.3.5 update is a bug imo, not a 'something happened'.

I am having the same problem since I have upgraded to iOS 4.3.5. I don't know whats **** wrong with the apple people to bring new software after sometime. After every upgrade you'll always get touble with either function of your iphone. I am sick of it.

try updating to the latest version maybe it getts better , and if ur battry is dieing then maybe its because the way u charge ur mobile !! the best way to charge is to wait till the battery drains out like 2o% then charge it