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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.