HERE'S THE ANSWER TO YOUR PROBLEM:
Have you ever dropped or thrown your cellphone? Have you ever placed it in contact with heat? In case you did, the culprits might the the following:
1. CELL PHONE BLUNT SCREEN: This problem arise when your cell phone is
placed in an area where heat is present. In this case, try to contact a cell phone technician who can assess whether your phone will still work in case repaired.
2. NO MESSAGE DISPLAY: Remove the
casing,unscrew the phone cell and clean the display screen interface on
the circuit board.
3. NO CONTACT FROM THE
KEY PAD. If you press the keys and they are not response or are not
giving any response or display anything while the cell phone is still
working.Check the tightness of the cell phone and re-tight it
Read more: http://www.articlesbase.com/tutoring-articles/cell-phone-problems-and-solutions-1459462.html#ixzz1QjBfDEau
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Your problem is solved already. Thanks...