My screen works but when I try to unlock it the screen is unresponsive. It has a small crack below the corner but it has been this way for ages. My mum fixed the screen recently because it was completely smashed but she didn't have any glue and used double sided tape instead. So I was lying on my back looking at my phone when the screen slightly popped out, this had happened before so I thought nothing of it and just popped it back in. But now the screen is completely unresponsive, I have tried turning it off and on again but it still wont work.