These two ways of connecting your phone to a cellular network are very different. We tell you about each and how you can switch from one to another.

SIM cards have become a universal aspect of modern smartphone usage, but the technology and meaning behind the name dates more than three decades.

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 ...

If your new phone no longer supports SIM cards, or you don't want to use them anymore, you can convert to eSIM instead.

Business travel means traveling to foreign countries that work far different from the US. Having cheap internet access can make a lot of things, from navigating a new city to sending emails, a lot ...

What is a SIM card used for? A SIM card, or a subscriber identity module/subscriber identification module, is a tiny memory card that contains unique information and is linked to a particular network ...

Millions of mobile phones may be vulnerable to spying due to the use of outdated, 1970s-era cryptography, according to new research due to be presented at the Black Hat security conference. Karsten ...