Samsung SGH-X105NBATMB - Manual (Page 24)

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Locking or Unlocking the keypad
You can lock the keypad to avoid pressing keys by mistake.
In Idle Mode, press and hold the
key until the LOCK icon
and “Keypad Locked” appear on the display.
You can answer incoming calls using any keys, even if you lock
the keypad. When you receive a call in the key lock mode, the
keypad is automaticlly unlocked. After the call, the key lock
mode is canceled.
You can dial emergency calls even if you lock the keypad.
When the confirming message appears, select Yes by pressing
the left soft key or the Green phone key. When you end the
call, your phone returns to the key lock mode after the period of
time specified in the Phone Lock menu option.
To exit the key lock mode, press the UnLock soft key and then
press the
key again. “Keypad Unlocked” appears and the
Lock icon no longer displays.