Unlocking Instructions for Sony Ericsson C903

Newer Sony Models (Xperia Range)

Most new Sony will ask for the unlock code when you put a sim in it wont yet accept because it is locked.

When you receive your unlock code(s) they will look similar to the example below:

Your unlock code is :

CCK: 260704XXXXXXXXXX
NCK: 221877XXXXXXXXXX
NSCK: 40710XXXXXXXXXX
SPCK: 34120XXXXXXXXXX

The letters CCK, NCK, NSCK, SPCK indicate which code to use the different locks on your handset.

So you need to find out which lock is active on the handset ( But usually you'll only need the one marked NCK).

To do this you need to look in a secret menu on the phone

Tap the following in as if you were dialing a number to make phone a call...

*#*#7378423#*#*
A new hidden menu will appear.
Tap on service info
Tap on SIM lock

If you have [x] Network 5 - this means your phone needs the net NCK Code
If you have [x] Service provider 5 - this means your phone needs the SPCK Code

Other Models: 99% Sony Ericsson

1 - Switch ON your phone without SIM Card,
2 - Press 1 time the left arrow,
3 - Press 2 times the button * ,
4 - Press 1 time the left arrow,
5 - The message 'Personalize with MNC2' will appear,
6 - You can now enter the Unlock Code we send to you.

If your phone have a 'JogDial' (ex : Sony Ericsson K700i) you must press 'Down Arrow' instead of 'Left Arrow' for step 2 & 3. We mean by 'Down Arrow' to direct the JogDial down !

W950 models need to use * up * down ** down (up/down using the jog dial on the side).

Satio

Enter # p w + CODE + 1 # into your phone.
Tap repeatedly the star key to get p w + symbols

Older Models

1. Insert a Non accepted SIM card ( EG your new SIM)
2. Switch the phone on
3. Press Left * * Left ( Left is move JogDial stick left )
4. This will open a hidden menu with 4 options (See image)
5. Select 'Network' ( You should see a locked padlock next to the option )
6. Enter the unlocking code we sent you. ( The one marked NCK )