the screen and led light not working

[Ahmed-moh]

I submerged my mobile in the sea
And after awhile it went black and won't turn on i left it 6 hours
Then tried again i can hear sound and the vibration works
But the screen and led light doesn't respond to anything

I want to know what happen
And what i need to repair

Sorry for my bad English

Thanks

[Uliwooly]

Hard to tell but having your phone at the sea its one of the worse things you can do, stop by your local Sony Xperia Care 

http://www.sonymobile.com/global-en/support/contact-us/

Most likely something got corroded