I've also had this issue with my iPhone 5 (64GB black, UK/GSM model) since a couple of days after launch.
The first time it happened I was taking a photo, so it's not exclusively an issue with the AppStore (although it has happened when using that).
It happens intermittently, about once a day randomly for about 5 seconds at a time.
There's a thread on the Apple forums discussing it:
https://discussions.apple.com/thread/4342241?start=0&tstart=0
I'd like to know in the next couple of days whether it's hardware related, since of course I can return the phone before then without having to demonstrate the issue to the Geniuses (which would be pretty much impossible given the transient nature of the fault).
It's not so much the fact it's happening which bothers me as the prospect of it getting worse over time if it is a hardware fault with particular handsets...
The first time it happened I was taking a photo, so it's not exclusively an issue with the AppStore (although it has happened when using that).
It happens intermittently, about once a day randomly for about 5 seconds at a time.
There's a thread on the Apple forums discussing it:
https://discussions.apple.com/thread/4342241?start=0&tstart=0
I'd like to know in the next couple of days whether it's hardware related, since of course I can return the phone before then without having to demonstrate the issue to the Geniuses (which would be pretty much impossible given the transient nature of the fault).
It's not so much the fact it's happening which bothers me as the prospect of it getting worse over time if it is a hardware fault with particular handsets...