Getting an invalid SIM on iPhone and don’t know what to do? Let me help you with some solutions that should fix the problem. Check out the details as you read further on this post. How would you feel ...

Hello Android fans! This post will answer another common problem for the Galaxy S9 Plus: Invalid SIM card error. We provide all the software troubleshooting steps ...

Some owners of Apple's new iPhone 4S have been hit with SIM card error messages, even if they are connected to a CDMA carrier that does not use SIM cards. One reader ...

Apple's recent update to iOS 5.0.1 may have been designed to deal with intermittent "No Service" and "No SIM Card Installed" iPhone 4S messages, is being pushed to iOS 5 users who haven't upgraded to ...

A Summary of SIM Registration Data available from the NCA indicated that out of 22,708,716 submitted by the operators to the NCA for verification, some 5,580,875 came out as invalid as at February 6, ...

Yesterday, we noted that Apple had quietly released a tweaked version of iOS 5.0.1. The purpose of the tweak was a mystery given that the update was not being pushed to all users and only made ...