How to Troubleshoot a SIM Card Rejected Problem

SIM cards are essential to the operation of a GSM phone.

SIM cards are essential to the operation of GSM mobile phones (such as those on the T-Mobile and AT&T networks) internationally. The SIM card holds the key to activation and use, including the device's phone number and the user's contacts. When the phone prompts a "SIM Rejected" error, it may seem like all hope is lost. With a few visits or possibly even a call, the SIM card issue can be resolved and the phone will be back up and operational.

Instructions

1. Remove the phone's battery cover and pull the battery out. Remove the SIM card.

2. Wipe the SIM card off gently with a soft cloth. A dirty SIM card can cause a rejection error. Put the SIM back into the phone and replace the battery and battery cover and power the phone back on. Check for the SIM rejection error.

3. Bring your phone and SIM card to your provider and explain your problem. The associate may be able to back up the information from your original SIM onto a new SIM. He will also assign that new SIM to your account and phone number.

Tips & Warnings

• Always back your contacts up to both your phone and SIM card. This ensures that you will not lose your contacts if either the phone or SIM card malfunctions. Most phones will allow you to view either your phone contacts or your SIM card contacts so you will not see duplicates.

• SIM errors sometimes result from attempting to unlock your phone to use it on multiple networks. Refrain from doing so unless absolutely necessary.

• SIM errors can also result from setting a password and forgetting that password when requested to enter it. If you are forgetful of passwords, be sure to write it down somewhere.

References

• T-Mobile: Resolve SIM Errors
• AT&T: SIM Errors