How to find out if your phone is locked

Can I check if my phone is unlocked with IMEI?

An IMEI number can be used to determine the device make and model, and whether the device is locked or unlocked. If a device has been lost or stolen, the IMEI can also be used to block it from being used on most carrier networks, including T-Mobile's.

Is my phone locked to a network?

How can you find out? It's simple to find out if your phone is locked. Simply insert a SIM card from another carrier (you'll be able to get one free from a phone shop or by ordering one online) and see if the name of the network appears on your handset.