Hello.
I updated my iPhone 4 to iOS 6.1 through iTunes with a full restore through DFU mode, and left it connected for a long time. And I have terrible batterytime when I have 3G and Mobile Data on, approx. 4 hours in standby. With them off, and Wifi on it lasts for at least a day with heavy usage.
I really want to have this fixed since on my working days I have about 2 hours walk to work and I have mail and other stuff on the internet that I'm obliged to keep updated on. And then I have the same walk home from work.
So if I have 3G and data on, half of my battery is drained when I arrive at work, and it has happend a couple of times that my phone has died while at work. NOT good.
And since this started I've done numerous full restores through iTunes and nothing has solved this.
Any ideas, and should I update to 6.1.2 or is that a bad move?
Regards
Izaac