There have been a number of problems reported for the iPhone 4S since it was launched, and also some for other devices including the iPhone 4, with iOS 5, the main one being the battery problems reported by a number of users.
Now it would appear that there may be another problem, although from early reports this one is exclusive to the iPhone 4S, some users have reported that their handset has stopped recognizing their SIM card.
Users then have to reboot the device, and things seem to go back to normal for a while, although other users have reported that this doesn’t fix the problem. Have a look at our article on the difference between the iPhone 4 and iPhone 4S. Apple has now announced the iPhone 5, have a look at our article on the difference between the iPhone 4S and iPhone 5 to see all about the new iPhone 5.
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