If you buy a phone from T-Mobile (GSM), they will gladly unlock the device for you if you tell them that you will be traveling with the phone to Europe. Altern

If you buy a phone from T-Mobile (GSM), they will gladly unlock the device for you if you tell them that you will be traveling with the phone to Europe. Alternatively, you can purchase either the ADP1 or ADP2 phones directly from Google already unlocked.