HELP PLEASE: Blue Screen

[HelpSeeking]

My iPhone 5 was working fine till I dropped it on the floor one day. From then the phone works perfectly until random times during the day where the screen goes blue suddenly and I have to reboot it or sometimes the screen just goes weird and I have to reboot because the phone doesn't function

I'm wondering if this is a problem with the LCD or the Logic Board???

Please help and thank you!!!