Sony Ericsson ST17i Pattern Unlock, Hang on logo, Security Lock done
This tutorial tested by me without any risk you can easy remove many locks like pattern lock, security lock, screen lock etc because this tutorial use for no need any box you can download from below link and easy remove locks like above mention, but remember before use this tutorial because this is need to understand, if this tutorial use you can't save data like contact, photos, videos, etc because this is factory reset so remember must this mention also before use this tutorial check your micro usb cable if not working then you can't remove above locks and also check your device driver if not install then install first after you can easy remove lock so all are required for unlock remember that if not working this tutorial.
1. Turn on device
2. Click on Emergency button and type *#*#7378423#*#*
3. After you can see menu like below image
4. Now touch on Customization Settings button
5. After you can see menu like below image
6. Next Click on Reset Customization
7. After you can see menu like below image
8. Click on Reset Customization and reboot button
9. You are done from above problem.