iPhone keeps turning itself off any ideas?
I'm having an issue with two iPhones at the moment both are 3GS.
The phones switch on, show some battery, then randomly turn themselves off. Can turn them straight back on again so the battery isn't drained yet they will just turn off again.
If I try to plug them into a computer/wall, they display the battery full indicator, when unplugged they don't show 100% battery (one is under 20% in the red, one is at about 30%).
I've tried using a couple of different batteries I have laying around and it just seems to be the same problem.
edit - I should also add that one of the phones when a restore is attempted goes all the way through then shows error 29 as it's rebooting and goes into recovery mode. Booted it out of recovery and attempted again with the same result.
Thanks guys :)