Today I will present how to reset a phone like the one shown yesterday namely UTOK 400D.The process is more complicated because there is an extra step.Warning! All data will be lost,please make backup first!
First step is to power off your phone.
power key.
That's all!
For more details you can watch the video tutorial here:https://www.youtube.com/watch?v=UXu7ar6vNzM