How do I lock the keypad? - Nokia 1661 Cell Phone

I guess you mean the Keypad Lock/Unlock!

You can turn on the keypad lock of a handset.
In idle mode, press * button and then LOCK to turn on the keypad lock. "PRESS UNLOCK TO USE KEYS" is displayed on the LCD.
In keypad lock mode, press UNLOCK to turn off the keypad lock.

Before locking the keypad first remember if the keypad lock is assigned with a security code.
Default value of the security code is normally 0000.

1. To lock the keypad first press the option key, then select the LOCK KEYPAD.
2. To unlock the keypad press the option key then press the "C" button.

You can check more lock/unlock optoons in the users manual, downloadable from this link. Read page 63 and on.

http://dl-www.sonyericsson.com/cws/download/1/150/669/1192984731/J230i__UG_R1a_EN.pdf

My keypad won't light up when door is locked when you push lock won't light up green:

To make the keys light up when you want to enter your code, you have to push the lock button on the keypad first. If the keypad light never comes on, open the door and manually lock the interior lock, then press the keypad lock button. The above instructions should then work.

Keypad lock
To prevent accidental key presses, select Menu, 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.

To unlock the keypad, select Unlock, and press * within
1.5 seconds. If Security keyguard is set to on, enter
the security code if requested.
To answer a call when the keypad is locked, press the
call key. When you end or reject the call, the keypad
automatically locks

depending on we can't put the keypad lock on w580i while flicked closed keypad can be locked

You 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.

K530i To manually lock the keypad:

1. From standby, press the * key.
2. Select 'Lock keys'.

To activate automatic keylock:

1. From standby, select 'Menu' > Settings.
2. In the General (tab), select Security.
3. Select Automatic keylock > On.

To unlock the keypad:

1. From standby, press the * key.
2. Select 'Unlock'.

NO KEYPAD LOCK 4 Z550i,ONLY PHONE LOCK AND SIM LOCK

You 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.

K800i To manually lock the keypad:

1. From standby, press the * key.
2. Select "Lock keys".

To activate automatic keylock:

1. From standby, select "Menu" > Settings.
2. In the General (tab), select Security.
3. Select Automatic keylock > On.

To unlock the keypad:

1. From standby, press the * key.
2. Select "Unlock".
3. hope this helps Thanks and God bless

To lock the keypad so that you don't accidentally call anyone, simply press AND HOLD the red "end call" button.

To release the lock, press the left menu button, then hash (#)