A pair of severe security problems in millions of SIM cards should be easy for operators to fix, according to the German security researcher who found the issues. Karsten Nohl of Security Research ...

Gently cleaning the SIM card and its tray can remove dust or debris that might be obstructing proper contact. Switching Airplane mode on and off can help reset network connections and prompt the ...

A "SIM Not Provisioned" error can occur due to various reasons, like new SIM activation or compatibility issues. Try simple solutions like restarting your phone ...

If your Android phone is showing a “No SIM Card Detected” error, you can’t connect to your cellular network. When that happens, you can’t use your phone to make or receive calls, send texts, or ...