Apple warning on unlocked iPhones
Apple has warned that anyone attempting to unlock their iPhone to use with an unauthorised mobile network could find their phones irreparably damaged.
The company said that modified mobiles would become "permanently inoperable" once Apple updates were installed.
It follows a flurry of hacks claiming to unlock the phone, which is tied into the US AT&T network and O2 in the UK.
Apple has denied that it is "doing anything proactively to disable iPhones that have been hacked or unlocked".