I bought a phone off of ebay that said it was unlocked for all carriers everywhere. When I try to put my tmobile sim card in it it says "invalid sim" I called Sprint and they said that it shows as unlocked. I tried a factory reset but that didn't help. I tried to go to "system update" and "update prl" and "update profile" but it just says "no network" I've tried adjusting the APN but "Mobile networks,"network mode," and "access point names" are not listed in my phone. Please help!
Also, I tried following the steps in that link but my phone just says, "No network" when I click on "update PRL" or "Update Profile." Also, my phone does not offer "UICC Unlock"
Hi. In order to unlock the device, there are certain requirements that it needs to meet, among the most important are: