once my samsung andoid phone fell down after that my touch wid was not working i was changed it

[BALLABHK]

once my samsung andoid phone fell down after that my touch wid was not working i was changed it then my mobile network coverge is too low.earlier it was excellent n/w coverage but now it is not.
what is the problem?

 

[rgd1101]

The problem is you dropped your phone and broke it.