Hard reset Dexp smartphones (factory reset)

DEXP G253

DEXP G250

DEXP BS650

DEXP BS550

DEXP BS155

DEXP BS150

DEXP BL250

DEXP BL150

DEXP B450

DEXP B355

DEXP B350

DEXP B340

DEXP B260

DEXP B255

DEXP B245

DEXP B160

DEXP AS260

DEXP AS160

DEXP AL240

DEXP AL140

DEXP A240

DEXP A150

DEXP A140