The newer eSIM technology, which is quickly becoming the standard on high-end phones, is safer and more convenient.

Seeing “No SIM” or “Invalid SIM” on iPhone? Check your SIM card, restart, or update your carrier settings. Simple fixes often ...

For years, this chip was on a physical card that you could swap in and out by ejecting a SIM card tray from your phone. Most modern phones, however, also support eSIM.