If you want to unlock the HTC Z820 Obsidian with the IMEI code, we can do this no problem; all mobiles are unlocked by code. After introducing the code the mobile will be unlocked, without losing its warranty or any data. These unlock codes are calculated in minutes, and you will instantly have your phone unlocked forever!
You can unlock your blocked C Spire, AT&T, US Cellular, Cingular, Cricket, Nextel, Sprint, T-Mobile, Verizon, MetroPCS, Tracfone, Boost Mobile, Aio, StraightTalk, H20 Wireless, Simple Mobile, Virgin Mobile, Family Mobile, Xfinity Mobile, Viaero telephone from USA (spanish), and then use any SIM card from any country or network.
1. - Make sure you have an active data connection via 3G/4G/LTE or Wi-Fi.
2.- From the Application list, tap Device Unlock, the application is located in the T-Mobile / MetroPCS folder.
3.- Choose the Permanent Unlock.
4.- Restart the device.