To remove the SIM card from your iPhone, you'll need to eject the SIM card tray with a special tool or paperclip.

If you’ve bought an iPad with 4G/cellular capabilities (we discuss whether that’s a good idea in our 2015 iPad buying guide) or a new iPhone, you need to buy and install a SIM card. Here, we explain ...

You can activate a new or used iPhone for use with a cellular service provider in a few steps. Here's how to activate any iPhone, or troubleshoot it.

A SIM card, or subscriber identity module card, is essential component of any phone. It connects your device to a cellular network and stores vital information, including your phone number. Many ...

All iPhones and iPads with cellular have a slot on their sides that houses the Subscriber Identity Module (SIM) card provided by your mobile carrier. The SIM card enables your device to access the ...