i'm having a display problem in my sony xperia l...there is some white lines appearing on my screen. my phone is just 2 weeks old and its very dissapointing.
Hard to say what could be wrong without a picture of the problem but i suggest that you contact your local Sony Xperia support (http://www.sonymobile.com/global-en/support/contact-us/) or a service location to have your phone checked/repaired.
