In this thread is suggested to reinstall iTunes, then resinchronize the iphone...
tonight I'll try and tomorrow I'm going to see what's happens to my iPhone
I read another post and the solution seemed to work for me.
Go to Settings --> Store and then sign out of the App store. It's not exactly a fix but seems to be a workaround. Yesterday my battery drained twice with minimal usage, today it's been unplugged for 3 hours and I'm only down to 96%
Give it a shot before restoring your phone. (I have a 3GS)
I don't know exactly if the problem is solved or not, but I've the impression that the battery goes better after doing a new trick... (the only thing remaining to do is a voodoo ritual now).
from an external forum...
Finally I found it! Apple take note.
It is not the email accounts as there are no email accounts installed on my phone.
It is one of the downloaded apps from the App store. But which particular app I am unsure.
All this while, when using my iPhone 3Gs and iPhone4, I have not used my 3G data because I have been using WiFi at home and WiFi in the office and WiFi everywhere.
One of the programs using Notifications or Push has been requesting data through the Cellular Data.
The program somehow does not want to use your WiFi.
The program is running in the background and even when you reset your phone, the program will still come on and try to use your Cellular Data. All you have to do, is turn on your cellular data (assuming you have a data plan)
(Settings, General, Network, Cellular Data ---> ON)
Then after 1 minute, turn it off again. – The problem is solved.
(This is assuming you have a cellular data plan)
No need to Restore your phone. No need to hard reset your phone. No need to reboot your phone.
Oh my gosh.. after 4 months, the solution is so simple. No wonder Apple says there is no problem. They probably have Cellular Data and WiFi in their testing environment.
Come to think of it, that’s why people going overseas (and turn off their cellular data) complain of this poor battery life.
Apple : You can test this out yourself – Take an iPhone4 disable the Cellular Data – add the normal Email accounts and standard apps from the AppStore. Use the phone for a month – I am quite sure you will face a similar problem. Check for similar Usage & Standby times.
- You may want to check out Bump, Facebook, Foursquare, Palringo, Talkbox, Tango, Viber but I suspect its Facebook.
in fact, after switching off and on the Cellular Data and completely decharging the iPhone, the battery seems to go better. But that looks to me really as a black magic.
It seems resolved, nothing seems to drain the battery now.
I did the following actions:
Stepped out from my Apple Store account
Reinstalled iTunes on my MAC
Switched OFF and ON the 3G Data
Fully discharged the battery two times and recharged from the wall all night long.
Now after 5 hours of use, with just two quick calls and some music, the battery is at 97% much better than ever.
In my opinion the best things to do are to turn off Ping, and fully discharge the battery.
I tried all the recommended "fixes" - Nothing changed. Battery has gone from good (iOS 4.3.1) to terrible (iOS 4.3.2)... I have done a full restore, after no change an additional reset... my battery last exactly 5 hours with 3G on - the equivelant of standby - during this time I made/received no calls, did not listen to music, no web browsing and read one new email!!!!!!!!
I had this same problem with my 32GB 3GS. I enabled restrictions on Ping and iTunes on my phone and also also fully uninstalled/reinstalled iTunes on my PC laptop. Neither solution worked.
When I disabled the Cellular Data and 3G for about a minute, let the battery completely run down and recharged, the drain issue was largely resolved.
I'm still having issues with it taking longer than normal to recharge my battery, but the bigger issue of the excessive drain is much better.
I still haven't removed the restrictions on Ping and iTunes yet, but hopefully turning those back on won't cause the problem to return.