Sony xperia u cheapest dual core performer in Sony nxt series.
3.5 backlit display with 1 aspect ratio good for watching movies and pictures. it has a screen ppi of 280 which means more crispness and more sharper along with more content in a given screen area. The viewing angles arent perfect, but they are still notably better than most competitors in the screen attracts dirt too easily due to absence of oleophobic coat so try using screen guard every time.
Due to narrow screen (1 aspect ratio) it becomes difficult to use portrait qwerty keyboard due to its cramp size, well manageable if you have small hands. Being member of next series it has pretty impressive design and built quality. The body is made of matte plasty which feels good to hold and believe me it doesnt gets scratched. It has well designed curves which helps in holding phone firmly .
user interface and performance
Initially, it was shipped with android 2.3 gingerbread... but now ICS is out . Sony timescape along with ics is pleasure to use. it offer some pretty fancy Sony exclusive things like ALBUM , FILMS, WALKMAN apps. BOX for Sony offers 50 GB cloud storage for free.
Being dual core, it offers hardcore performance and bench marking is good too.
GAMING
equipped with dual core and mali 400 gpu (galaxy S2 too have it ), it gives splendid gaming performance . I can play almost all games smoothly except for the ones demanding too high hard
FIFA 12.
Gangstar Rio: City of Saints HD
Ducati Challenge HD
Riptid.