Not registered on network

[Anonymous User]

Not registered on network 

[xSteveuk]

Hi,
Try restarting phone
If still an issue
Power off phone
Remove and Re-Insert sim card
Power on phone
If still have the issue
Contact your network supplier

[DannyT]

It would also be worth trying your SIM card in a different phone. That way we know if the issue is with the phone or the SIM.