Sony Xperia Hard Reset 1000% Work But not all Model

1.switch on mobile "mobile show google lock

 2.then go to emergency call press this code *#*#7378423#*#*
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