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You have to contact xperia care because this is far from being implemented and it is a google related thing.
http://www.sonymobile.com/global-en/support/contact-us/
Alexdon, Samsung letting move to sd card, why Sony ignoring their costumers? If possible unofficial after root to move to sd, so Sony can do that official
Need just to want to do for costumers that and a little re-update software
Just Sony can do enable that
And all costumers will be happy... not just like now... all of us must root and lose warrenty
Sony, we can say now, that saying to us with this ignore like that "root phone, lose warrenty"
U understand what i mean i hope :)? It's not Sony words, it's just my opinion, coz sound for me like that "root phone, lose warrenty" 
I am sorry,I do not work for Sony so I cannot say anything.
Alexdon, yhea i know it's not for u all my claims, but u are modernator of Sony, u can all ours claims bring to Sony developers team or ect, so uare voice or ears of Sony here, that's why we somtime asking u about all news and ect
I am a simple forum moderator,not from staff.But you can contact a staff member for your needs:
http://talk.sonymobile.com/t5/Welcome/Community-users/m-p/634967
Alexdon, thanks
I will know that 