Lock screen unlock sony ST18i - Sony Ericsson Xperia Ray ST18i Android 2.3 Touch Screen 8MP Camera

Did you mean carrier lock password or security lock password ? To crack carrier lock password, use unlock code . You can get it from any of the online vendors like ProUnlocking.com to unlock it .

OR

If you want to break security lock password, use default codes to break it .

Did you try setting the 'vibrate' option on?
If so, then you might have a problem with your device. Get it repaired.
If not, go to 'settings'=>'alerts'/'ringtones'=>Vibrate=>On

MY LIGHTS DONT WORK EITHER CANT UNLOCK MY IPOD WONT DOWNLOAD MUSCI

my mobile sony Ericsson xperia st18i"IMEI NOMBER 359590043022935 plz send me screen lock open code

ur defalt phones codes is 12345 or 00000 u can use it
Default 4 Digit user code: 1234 or 0000
Default 6 Digit Security code: 123456 or 000000

Type *#06# at the mobile screen to know IMEI no of your mobile.
send the IMEI no to me and i will reply you with unlocking code.
IF Problem not Solved So
Please New Software install in the Phone Problem will Solved

If For puk & pin cod problem So Please
Very Best Solution:You Go To Service & Sim Office and Get The Puk code And Pin code From Office oprator
Enter The Puk code and Yes
Enter The pin code and Yes
So Puk code Open and Problem will Quickly Solved

NCK code and Network unlock code are same..Your SONY ERICSSON K608I locked to network...You need to Unlock it from Current network lock to use with other GSM Network sim card...Visit the site
Mobileunlocksolutions.com/sony-ericsson-k608i/rs1wp9/ buy NCK(Unlock code)code and unlock your SONY ERICSSON K608I..

go to www.phoneunlockers.co.cc

To unlock the Sony ericsson W20 You can use the unlock code,You can get the unlock code and instructions from here
Theunlockspot.com
and Unlock it from Network lock,You can enter the code using the instructions below:

Sony Ericsson W20 Unlocking InstructionsWarning : Do not enter any wrong unlock codes on your Sony Ericsson W20 mobile phones. If you enter over a certain amount of wrong unlock codes on your Sony Ericsson W20 mobile phone, your phone may get hard locked and sometimes become unusable.
1 - Switch ON your Sony Ericsson W20 without any SIM Card,
2 - Press the left arrow key/button once,
3 - Press the button * twice,
4 - Press the left arrow key/button once,
5 - The message "Personalize with MNC2" will appear, (or you will have displayed an unlock menu, select the lock you want to unlock)
6 - Enter the Unlock Code.