Enter the default login (usually for both username and password). A prompt for the "NP Code" or "NCK" should appear.
Unlocking your ZTE MF910 requires a few steps: zte mf910 unlock firmware free
The patch was created by a group of developers who had reverse-engineered the ZTE MF910's firmware and found a way to unlock it. Alex downloaded the patch and followed the instructions carefully. Enter the default login (usually for both username