SIM cards have been an integral yet forgettable aspect of owning a smartphone over the past few decades. For most users, the SIM card defines the basic commercial relationship they have with their ...

Dutch digital-security firm Gemalto NV is investigating a report that U.S. and British intelligence agencies hacked into the company, which is one of the world’s biggest cellphone SIM-card providers, ...

A SIM card, or subscriber identity module, is a small card in your cellphone that connects you to the network. Your SIM card contains your phone number, and lets you make phone calls, send text ...