SIMs offer faster activation, better security, and easy travel SIMs, but drawbacks include harder transfers, carrier limits, ...

For many years, mobile phones received cellular service through a physical SIM (subscriber identity module) card that connected your handset to your phone carrier. These physical SIM cards made it ...

The eSIM standard was introduced in 2016, slowly gaining support as a secondary option in smartphones. Rather than holding your phone number on a removable card, an eSIM is a programmable, ...

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. I started my career with CNET all the way back in ...