Camera app. Alternatively, from the lock screen, quickly press the Power/Lock button twice.In this tutorial, you will learn how to:
• Access camera settings
• Change the picture size
• Turn the flash on or off
• Set a timer
• Turn the grid on or off
Access camera settings
From the Camera app, select the 
Settings icon then edit Settings as desired.
Change the picture size
From the Camera settings, select Picture size then select the desired option.
Turn the flash on or off
From the camera screen, select the 
Flash icon then select the desired option.
Set a timer
From the camera setting, select Self timer then select the desired time.
Turn the grid on or off
From the Camera settings, select the Grid line icon.