iPhone 4S screen issues

[willy5432]

Hey the phone was dropped and the screen smashed. The phone worked for a while then the screen went blank. The screen was replaced, I paid someone to do this. This still didn't fix the problem. I thought it might have been the battery, I replaced it this time. still nothing though it would vibrate or bleep, with plugged in. So I was stumped for a while. I decided to replace the charger port. I put everything back together and the charger sign came up and I thought great. But once the phone switched on, the screen went blank. Though it was still on, you can use siri, and if you touch the screen you can I think press where you have spoke to siri or asked it to search. Any advice would be great