This is useful in case you want to activate a new device, but you have reached the activation limit for the type of device.
You can only deactivate your mobile device on the device itself.
You cannot deactivate it using a PlayStation 4, PlayStation 3, PS Vita, PS TV, PSP or on a PC/Mac connected to the internet.
You cannot deactivate your Xperia if you do not have access to it. Contact us to find out if we can deactivate it for you.