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Display 
Open Settings and touch Display to configure the display 
options, including brightness level, Night Light, Display 
optimization, Read mode, ZTE Locker, wallpaper, screen sleep 
time, auto-rotate screen, font size, etc. 
Sound 
Open Settings and touch Sound. Adjust different types of 
volume, toggle sound mode (see Switching to Vibration or 
Silent Mode), set Do not disturb options (see Using Do Not 
Disturb Mode), set up ringtone and notification sound, use 
Headset Hi-Fi, set DTS sound effects, and set other sounds 
and vibration. 
Storage 
Open Settings and touch Storage to view the memory 
information of the internal phone storage and the microSDXC 
card (if one is installed). 
  Saving location setting: When a microSDXC card is 
installed, you can select Phone or SD card as the default 
location for new data, such as captured photos and 
recorded audio. 
  Device storage: Touch Internal shared storage to get a 
detailed breakdown of space usage by type.