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hi, i received present from ch, orange sony xperia u, sadly its locked and i cannot use phone here in my country, can i get codes for unlocking, thanks
p.s. its an awesome handy 
that's not up to Sony to unlock the phone but the carrier.
you can pay and get it unlocked here
www.cellunlocker.net
why, its a pure sony
and i wonder why its locked anyway
im in menu but what to look,
i can give you this for now
service info-sim lock
[]network 5
[]network subset 5
[]service provider 5
[]corporete 5
as you can see it is locked to a carrier
it should be all 0s if it was Sim free.
the question is where did you bought this phone? was it from a carrier as a contract free phone?
it was a present
bought i switzerland, orange prepay
well there you have it, it is locked to orange Switzerland, contact them they might be able to unlock it for you if not there's another option check the link above