The No SIM card error may depict a possible software problem affecting the phone’s network functions particularly with the SIM card system. It can also denote a ...

SIM card errors in smartphones can occur among other symptoms of a software glitch like when installing new update with bugs. In other cases, hardware components are to blame including a damaged SIM ...

Once you’ve activated your iPhone with your carrier, it should continue to work on the cellular network without any problems as long as you’re within range of a tower. Nevertheless, the vagaries of ...

If the "your phone is not registered on a network" error has popped up on your Android phone, you know how frustrating it can be. Whether you want to call your family ...

If your SIM card is not showing a signal even after multiple fixes, then you need to try these solutions: If your SIM is old, bent, or frequently loses connection, it’s better to get a replacement SIM ...

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 ...

These two ways of connecting your phone to a cellular network are very different. We tell you about each and how you can switch from one to another.