How to pattern unlock of sony xperia st21i - Sony ST21i Xperia Tipo Black

This answer is given by the owner when the smartphone is first activated. You need to find that owner?

You can not unlock password but if your phone is locked and not rooted, you can update your phone's software by Sony Update Service.

If you are connected to the internet (via Wi-fi or your mobile data), you can access your phone after a few unsuccessful attempts by typing the password from the Google account assocciated with the phone (it will prompt that option). If you are offline, then the only way to reset the unlock pattern is by doing a factory reset from Recovery. Check this video: HOW TO HARD RESET WIPE DATA FACTORY RESET MANUAL RESET ON SONY XPERIA...

after a few(5-6 times) failing to enter the correct pattern, it should ask you to log in to your gmail account instead of the pattern you forgot

Usually after entering the incorrect pattern five times it will lock up for 30 seconds, but it will also provide an option on the bottom of screen that says "Forget pattern?" You must enter your User name and password to reset the pattern.

use wrong pattern 10 times. open with google account password.

hey and i love youi and you are nice

Try and go to settings and find security or privacy and then you will probably will see something about password change.

Hi,

You can do this by using SE bootloader.Below link has step by step instructions for the same:

http://mytipo.blogspot.in/2013/03/unlocking-bootluader-sony-xperia-tipo.html

Regards,
Rahul

yes