Recent studies have shown that embedded subscriber identity module (eSIM) acceptance is taking off, and now research from CCS Insight has highlighted eSIM as a technology on the cusp of bringing about ...

QUESTION: What exactly is SIM hijacking and how do I prevent it from happening to me? ANSWER: Our smartphones have become one of the most important devices we use on a daily basis, because so much of ...

Readers are writing in to tell us that AT&T is backlogged on their iPhone activations while Verizon and Sprint appear to be handling the load a little better. One reason is likely sheer numbers. Our ...

An international mobile subscriber identity (IMSI) is a unique number associated with GSM (Global System for Mobile Communications) and UMTS (Universal Mobile Telecommunications System) network mobile ...

An essential component of a GSM mobile phone. It contains the identity of the subscriber and assures the authentication during the access into the network and provides data storage for other ...