You'll need your iPhone's IMEI number if you want to unlock it and use it on a different cellular provider.

In this guide we’ll show you how to SIM unlock the Galaxy S9 so you can use it on different carrier networks. That way if you bought the Galaxy S9+ from AT&T, you can still take it to T-Mobile if you ...

If you want to take your Galaxy S10 and use it on any carrier network, you’ll have to do a SIM unlock first. In this guide we’ll explain how to SIM unlock the Galaxy S10 or Galaxy S10+ and why you’d ...

An unlocked phone is a device that has no carrier locks or restrictions. It's usually sold at full price. You can use it with any carrier of your choice, whether you're using a physical SIM card or ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. If you have the Nokia Lumia 1520 from AT&T and plan to travel overseas, you’re probably ...

If you’ve ever bought a second-hand iPhone or switched to a new carrier, you may have faced the frustration of a locked device. Carrier-locked iPhones prevent you from using SIM cards from other ...

There are two types of phones—those locked to a carrier and those free to use whatever carrier they want. There will come a time when you need to know which one your phone is. Thankfully, you'll have ...

If you’re thinking of moving to a new network, and want to keep hold of the same iPhone, you may hit a snag: the device is locked to your current carrier and can’t be used with any other company.

Some iPhones are locked to single cellular networks, especially iPhones bought in the U.S., while others are unlocked, meaning you can use them with any provider. It’s important to know which sort you ...