NGM tango Guide Rapide page 31

Turn ON, Turn OFF and keypad lock:
To turn on and off the phone, press and hold the red end call key
when the flip is open. The keyboard locks by closing the phone,
but you can still choose a period of time after which the keyboard
locks itself automatically when the phone is open, in Menu >
Settings > Security > keyboard lock.
To unlock the keypad, press Unlock (OK key) and then *.
At the first boot, the phone will ask you to make a short
calibration procedure of the touch screen, at the end of which,
the phone will automatically start. Follow the simple on-screen
instructions.
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