Hard Reset SENDO X2

Press Power button until your device is off.
Now you should plug in charger to your phone until the phone charge in off mode.
Press and hold 5 key + Power button.
Then if you see a green tick appears, then release holded keys.
To confirm operation use the left soft key.
That's all.

WARNING !
Hard Reset will erase all of your data
All described operations you are doing at your own risk.