iquinn
Well-known member
So having had IOS 4 for a week I can say for sure that I am getting better battery life then I was on 3.1, standby is better as well as using less battery when making calls.
I have a 3rd gen iTouch and I have definitely noticed higher battery usage. I took it out of the charger last night, and when I woke up it was at 55%!
One thing I did differently after iOS4 was switch to Google ActiveSync (push email). That could be causing the problem, though I am also using exchange push email for work and I didn't notice a problem with 3.1.2. I'll try disabling the gmail acount and see what happens.
NDPTAL85, home wireless is WPA1 so that's not my problem. Interesting idea though.
Was your Exchange email already set up when you upgraded? I was having serious battery drain issues on my brand new iPhone 4, which I upgraded to. I found that once I deleted my existing Exchange account, and set it back up, battery life improved significantly.
I have read in several places that existing ActiveSync accounts will drain battery life when upgrading, with the fix being to delete them off of the iPhone and set them back up again.
I will check the battery drain tonight with gmail turned off, and if that isn't much different, I'll try as you suggest.