If the "Automatic date & time" option is enabled, system date and time will be synchronized
automatically with network time when you connect your device to a Wi-Fi network.
To set the time manually, you need to disable "Automatic date & time"& Automatic time
zone.
Besides, you can also set time zone and time format as per your needs.
Volume
n the App list, tap "Settings"
to open the system settings app, and select "Sound". Then
I
you can set the parameter per your need.
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