Main Unit Keys and Buttons
Use keys and buttons on the main unit to carry out the following operations.
■ Power key
Power on f (hold down for at least 2 seconds).
Power off f (hold down for at least 2 seconds) → [Power
off].
Reboot f (hold down for at least 2 seconds) →
[Reboot].
Turn screen on f while the screen is off.
Turn screen off f while the screen is on.
Forcibly power off f (hold down for at least 8 seconds).
■ RESET button
Reset the product to
the factory default
Use the SIM eject pin (sample) to hold down for at
least 2 seconds → [YES].
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