Soft Reset DOOGEE Dagger DG550

First method:

  1. At the beginning remove the back cover and the battery for a couple of seconds. 
  2. Put the battery and the cover back in.
  3. Wait a couple of seconds.
  4. Turn on the phone by holding the Power buttonHard Reset DOOGEE Dagger DG550
See the Next method!
Help! This doesn't work