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Keypad lock To prevent accidental key presses,
and press * within 3.5 seconds to lock the keypad. To unlock the keypad, select Unlock, and press * within 1.5 seconds. If the security keyguard is on, enter the
security code when requested. To set the keypad to lock
automatically after a preset time when the phone is in the standby mode, select Menu >
Settings > Phone > Automatic
keyguard > On. To answer a call when the keypad is
locked, press the call key. When you end or reject the call, the keypad locks
automatically. When the device or keypad is locked,
calls may be possible to the official emergency number programmed into your device.
It seems that the keypad is locked. Does your poweron? If yes then press the poweron switch and you will find an option LOCK KEYPAD or UNLOCK KEYPAD. If it is the earlier then your keypad is free. If the later then select Unlock option and free up your keypad. If former then your there is no way that you can unlock your phone except re-installing the firmware.
The IMEI number is below the battery. But, it will not help despite everyone asking for a SW generated password.
get the firmware re-installed. It takes about half an hour.
can manually lock the keypad to avoid pressing keys by accident. You
can still answer an incoming call and the keypad will lock again when
the call is finished. The keypad remains locked until you unlock it
manually. Depending on your phone model, you can activate the
automatic keylock. When the automatic keylock is activated, the keypad
locks shortly after you stop pressing keys. Please note: with
some phones you can still use external keys when the keypad is locked.
If you wish to lock the external keys you must lock them separately.
To Lock your phone
Hold down the # symbol on your phone until it says: "Phone Keypad is now Locked"
To Unlock your phone
The screen should now read in the bottom right hand corner "Unlock". press the corresponding key. It then asks "Unlock Keypad?" "Yes" or "No". Select Yes and press Menu button (also the play/pause button).
first, take out the battery and press the RED end call key for 15 seconds, then put the battery back in and turn on the phone.
if that doesn't work then try this from the website.
How do I lock/unlock the phone's keypad?
To lock and unlock your phone's keypad, press and hold the left navigation key.
Or, select Menu -> Settings -> Keyguard. Then highlight either of the options and press the OK
button. You can set your phone to lock the keypad immediately, or
automatically if no key is pressed after 30 seconds, 1 minute, or 5