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When you are unable to power on your phone, there
is another way to perform a factory data reset by using
hardware keys. Press the Volume up key and the Power
key at same time until the screen lights up.
10.4 System
10.4.1 Date & time
Use Date & time settings to customise your preferences
for how date and time are displayed.
10.4.2 Accessibility
Use the Accessibility settings to configure any
accessibility plug-ins you have installed on your phone.
10.4.3 Printing
Your phone supports wireless printing to enabled
printers and online services.
10.4.4 Scheduled power on & off
Turn on the switches to enable scheduled power on/off,
and preset your power on/off time and repeat mode.
10.4.5 Regulatory & safety
Touch to view product information.
10.4.6 Developer options
To enable this function, go to Settings > About phone,
then touch Build number 7 times. Now Developer
options is available. The developer options screen
contains settings that are useful for developing Android
applications.
10.4.7 About phone
This contains information such as Legal information,
Model number, Android version, Android security patch
level, Baseband version, Kernel version, Build number,
and Custom build version.