It has been reported that iPhone 4S may not recognize a micro-SIM card. This may result in receiving an error message stating “No SIM Card installed” or “Invalid SIM”. This bug has been fixed by the latest iOS version. If you encounter this problem, you should update to iOS 5.1 or later.
Selasa, 26 September 2017
‘No Service’ or ‘No SIM Card Installed’ message on iPhone, fix
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