My iphone had a white screen and then it went black?

I had dropped it before and it had a shaking screen and blue lines. I tuned it on to check the time and it turned white then black. It still gets calls. I reset it with the powerand home button. What should i fix

Sounds like a hardware issue, not a software issue.

you may have damaged the lcd, or a ribbon cable may have come loose inside.

Search the web for local phone repair shops, the can probably fix an issue like that for around $50.