If you’re on a prepaid or pay-as-you-go phone plan, you most likely have an unlocked phone.
If you’re not, here’s how to check depending on your phone model:
For Android:
Open the Settings app.
Go to the Network & Internet, Connections, or something labeled similarly.
Select the Mobile network, Cellular network, or something labeled similarly.
Tap Advanced, Network operators, or something labeled similarly.
Toggle off the Select automatically, Choose network, or something labeled similarly.
If you see a list of carriers pop up when your phone searches for networks, your phone is unlocked. If you only see the name of your current carrier, your phone is carrier locked.
Note: Since there are a lot of Android devices, we recommend Googling your device or using an IMEI check (we have our own! www.really.com/device-check)
For iPhone:
Go to Settings
Click General
Select About
Scroll down to Carrier Lock
If it shows No SIM restrictions, your iPhone is unlocked
If it shows SIM locked, your iPhone is locked
Note: You can also use an IMEI check to check the status of your device (we have our own! www.really.com/device-check)