Samsung J3 Unlocked Phone on this page. Once we have received iPhone IMEI and our unlocked system approved by T-Mobile UK, we have transferred it from the blocked IMEI database to the unlocked IMEI database. Remember, you do not pay in advance, and the carriers support you financially to help their customers until they get the money back. The exact process, however, varies from device to device. Therefore, do an online search on our website for information on unlocking T-Mobile or another smartphone if you purchased the device from T-Mobile, or if you own an authorized T-Mobile device, follow the steps below to see if You can get a lock code for your device. Can A Sprint Iphone 5 Be Unlocked For Straight Talk more. If you are active If you are a member of the US military abroad, you may request a sprint lock, although the same warnings (good reputation, Sprint account) still apply.