User Manual
Page 183
... or factory resetting your phone If your phone becomes unresponsive or sluggish, try restarting your phone and see if that cannot be taken lightly. In case your phone has a persistent problem that helps solve the problem. Performing a factory reset (hard reset) If you cannot turn the phone on to be solved...
... or factory resetting your phone If your phone becomes unresponsive or sluggish, try restarting your phone and see if that cannot be taken lightly. In case your phone has a persistent problem that helps solve the problem. Performing a factory reset (hard reset) If you cannot turn the phone on to be solved...