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  Interval: Take several pictures with the front camera 
automatically and save the selfie(s) you like. You can set the 
time interval between each picture in the camera settings. 
  Filter: Select a color effect for the picture. 
  Qr code: Read the QR code in the viewfinder screen. Or 
touch    at the top to open a picture and scan the QR code 
in it. 
  Night: Capture pictures in low-light environment. 
  NOTE: 
Some camera modes are only available for the back camera or 
the front camera.