How to remove sony xperia u screen lock

This is solution of sony xperia u screen lock problems.

When you Switch on mobile "mobile show google lock on display"

1. Then go to emergency call press this code *#*#7378423#*#*
2. after pressing key display show four option

   #service info
   #Service setting
  #Service texts
  #Customization setting

3. Choose "customization setting"

4.Then press "reset customization" phone will reboot & reset