I have a galaxy S3 (att). My problem is I used my phone it was fine then the last thing I remember was putting it in m back pocket when I got home I plugged it up because when I used it last it was almost dead...so I plugged it up went back later and my phone u could here it come on the home screen and what knot lit up but there is nothing on my screen well now when u hit the lock button u can see the top partial of my back ground then it just goes black!! My front screen there is NO cracks nothing its in perfect condition!!! That's what is throwing me off!!! Anyone tell me what I can do to fix this or any insight of what I could do to fix it or what parts do I need to buy and if I have to buy any part please direct me to a good place to purchase them TIA :) HAVE A GOOD DAY