hi

[AhmedRezq110]

Hi , my phne was stolen and i want to lock it , could you help me ???

[Uliwooly]

Sorry to hear that, for you to be able to lock your phone 

1. the phone has to be on
2. wifi or data has to be on
3. your google account has to be still on that phone 

if 1,2 and 3 then you can use MyXperia or Android Manager

https://www.google.com/android/devicemanager

myxperia.sonymobile.com