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 ...

iPhone SE is a single SIM phone, but if you don't want to go through the hassle, you can also buy an unlocked SIM-free version too.

If you want to upgrade your iPad to have 3G/4G capabilities, you need to equip it with a SIM card. Our beginners' tutorial explains where to get the right SIM card, and how to do install it.

Want to install an extra SIM card in your iPhone 6s? Here's how to do just that.

Activating a new SIM card on your iPhone is a simple process that just takes a few easy steps. Read more: Best iPhone of 2024 Follow our step-by-step guide to help get your new iPhone up and running.

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

Is your iPhone is telling you it doesn't have a SIM card available? Here are some fast and easy things to try before calling your carrier or the Apple Store.

Whether you have an older iPhone with a SIM tray or a newer iPhone with eSIM, we will help you get your phone back up and running if it loses SIM connectivity.