So you’ve chosen Ultra Mobile as your carrier. Great choice! But before you start enjoying those international calling features or high-speed data, you need to install your SIM card. Don’t worry; ...

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.

A SIM card that doesn't work can cause a lot of problems. Here's how to fix the "No SIM card" error on your Android phone.