Hi,
There most probably is some internal damage to the phone due to the fall.
It will have to be opened and inspected as to what the problem may be.
Here’s a link to a [https://www.youtube.com/watch?v=2EBOtWuPeRQ|video] that shows how to open the phone.
If you don’t know what to look for besides broken components, contact a reputable mobile phone repair service and ask for a quote to repair the phone