This is caused by the SIM card falling out of contact with the reader in the phone.Your smartphone is a highly advanced piece of modern technology, jam-packed with wi-fi, GPS, a brilliant camera, Bluetooth, motion sensors and much, much more. Solution 10:- Update your i Phone or i Pad to latest version of i OS.On many Black Berry© phones (the ones with SIM card doors instead of slot load SIM cards) over time the phone may start displaying 'SIM Card Error' in place of the network name and 'SOS' where the signal meter is. Press and hold Sleep/wake button and Home button together until Apple logo appears. Note: If its not work use small paper clip and insert it in the SIM card hole. Solution 3:- This solution solved some i Pad users issue.
If you're in the Express Post network, you'll receive your sim card the next business day after we ship it.
On Allow Restrictions, look for cellular data and tick “don’t allow changes”.
If you have any other problems or solutions about No SIM card issue, do let us via comment.
For example, if you're in Paris, you can check Google Maps, call someone else using our SIM Card, call a UK phone number, and call a local French number.
If you use the SIM Card exclusively in any of the included 34 European countries for two or more consecutive months, then Three UK may permanently cancel your SIM Card without refund: the SIM Card is intended for primary use in the UK.