There's a very good chance your phone has a SIM card right now, especially since CDMA networks have been almost completely supplanted by LTE networks. Those cards allow your phone to connect to your ...

A dual-SIM setup lets you use one phone to make and receive calls and texts from two numbers. It's also super convenient and can save you serious cash when traveling. We show you how to use two SIMs ...

Portable SIM card stores authentication information to wirelessly connect any smartphone or tablet to a network with the wave of a hand Instead of burying them in phones, Japanese mobile carrier NTT ...