Why do we still need SIM cards?

SIM cards, or Subscriber Identity Modules, go all the way back to the first GSM phones. Given how advanced today's phones are, why do we still need them?

By Joe Levi June 3, 2015, 5:32 pm

IMEI, your phone, and you

What is an IMEI? How does it differ from your SIM? Learn about the various forms of identification networks use to make your cell phone work.

By Joe Levi June 3, 2013, 7:29 am