Learn More about Carrier Lock
A carrier lock, also known as a “Sim not supported” error, is a restriction put in place by some carriers on iPhones that prevents the use of the device with other carriers. This means that if your iPhone is carrier-locked, you can only use it with the associated carrier, and you will not be able to switch to a different carrier without unlocking the device. Carrier locks are typically put in place to ensure that customers remain loyal to the carrier and continue to use their services. Learn how to remove Carrier Lock and SIM not Supported issues on your iPhone below.