Explanation:
I think that you might have used it a lot or its just a glitch and will come back after some time.
It might be that your screen cracked.
But try re-booting if that does not work, wait and take off the battery.
what's the case here did you buy that or did your parent buy it
if your parents bought it then come clean now rather than hiding it
don't make a bad situation worse by keeping a secret
there is no fixing it you have to buy a new one
