You don't need a SIM card and cellular service to use most features of today's iPhones and Android phones. Most apps and services run just fine as long as you have access to WiFi, and you can even set ...

Cellular providers offer all kinds of security and data encryption to their customers, but there's one task users should ...

I'm not buying the eSIM hype — physical SIM cards are more reliable and make you less dependent on your cellular carrier.

International plans, local SIM cards, free Wi-Fi and services like Google Fi can keep you connected while abroad. This page includes information about these cards, currently unavailable on NerdWallet.