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 ...

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 ...

When your device prompts you with an error message, it’s letting you know that something is wrong and that it couldn’t carry out specific command inputs. It’s ...

If you are one of the many impatient Apple fans from outside the US who have imported a 3G iPad, you will no doubt be more than familar with the lack of micro-SIM cards available on the global market.

If you've just got your hands on a shiny new Sim card, congratulations. Switching your Sim (the chip that dictates your allowance) can unlock huge savings. Now comes the crucial step of activating it ...