User's Manual

5
Button customization in settings-->Double click the setting to quickly open any
application.
Button customization in settings --> Long press to enter F150 mode.
Emergency contact in the settings-->Press the F150 button 5 times to enter the
emergency call state; when turned on, the flash will start and the phone will play an
emergency alarm. If you can add contacts，your phone will call them automatically
until getting through.