Share your experience!
The wifi direct feature in xperia u is only for the name sake included ...
Very bad on part of sony...
Why to include such an option when u are not following it use
What do you meant? Xperia U does have WiFi direct, it just doesn't have any software included for using it. You can download any WiFi direct-app you like from Google Play and use it.
Mine model is Xperia u st25i and Its with android ICS 4.0.4
here is the screenshot of it showing xperia u does have a wifi-direct ..
Also the phone starts to lag when using more than two apps.. simple like messaging and with any other app..
Many times it bluetooth not working i.e. unable to connect to other devices 
Moreover im very unhappy that Xperia U is not getting jelly bean while xperia J is getting.. also rumors to hear micro getting the jelly bean update..
Very much unhappy with this decision..