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I want to set up My Experia but when I go into Settings/ Experia My Experia is not listed. So I presumed the phomnne needed updating so as to downlaod the app but when I checked it says the phone is up to date . No new updates available. Any ideas?
Can you see myxperia in settings-apps-all?
In that case it sounds like My Xperia is not yet available for your unit.
You can use other services like Google's Android device manager: