So you've chosen Ultra Mobile as your carrier. Before you start enjoying your plan, you need to install your SIM card – here's a step-by-step guide.

Want to install an extra SIM card in your smartphone? Here's what you need to do just that.

All of your contacts will be written to the SIM card, which is called a "SmartChip" on LG phones. Remove the SIM card and install it in a different phone to access the contacts you just copied.

In this guide, we'll show you how to activate a Three SIM, how to do Top-Ups and Add-Ons, and how to install the My3 app on your phone ...

A SIM card, or subscriber identity module, is a small card in your cellphone that lets you place phone calls, send text messages, and more.

Criminals don't need a physical SIM card to make the swap. In most cases, they call the mobile carrier and impersonate a victim. Here's how to protect yourself.

SIM Swapping: How the Latest Cellphone Hacking Scam Works, And How to Protect Yourself The scam – involving control of the SIM card we all have in our phones – is shockingly simple ...