Hi I've used a couple of code calculators and got the message "SIM not restricted" after entering them. However, the phone says "SIM card not accepted". Can someone help? Make/model phone:Nokia 3310 IMEI #:352508007986314 Country the phone is locked in:United Kingdom Provider the phone is locked to: Tesco Mobile Much appreciated. Thanks
“Cannot undo restriction” or “Not allowed” means. After you have made 5 attempts or even 3 attempts on newer phones and failed, the phone displays that message, meaning that the phone is "hard locked." At this point, you will still be able to use the phone with the original provider, but you will not be able to unlock it by codes. You will need to take or send it to a professional for direct unlocking service.