Hi,
I had purchased a Sony Xperia U on 21st Jan 2013. I went by sony brand and bought without much of research. However, that was my biggest mistake.
The next day only I had to take it to the Service Center. Problem very many: Battery was just dipping in 3 hr. without internet, screen was automatic showing mirror look and the biggest problem was, when I receive a call I was unable to take as for that particular time it gets hang (mainly till the bell is ringing ) and as soon as its over i can do what i want. I submitted the mobile they updated the new version. Some problem got solved however still i was facing screen hang problem however I decided to continue with the same in that manner due to my busy schedule. After 4 -5 months I again decided to take it to service center. At that time they told me they will change screen..it will solve the problem. I gave them and they changed it.... However, no improvement!!!. Then again I left it and started using another mobile as I lost all hope in two visits only.. I wanted to give final shot so I took my mobile to service center before 15 days of expiry of warranty. Then they told me it a problem of hardware whole IC needs to be changes. I requested them to do that and take all possible effort to replace my mobile because since day one i am facing problem with the mobile.. They replaced the IC and returned me...
But now problem has increased. Earlier i used to miss 5 calls out of 10 call because of that. Now I miss 8 calls out of 10 calls..
Literally Hilarious!!!

So please help..