So I took my iphone 5 apart to change the battery. After I changed it and put everything back together the screen won't come on. If I plug it in it just makes the charging sound over and over again. I think I may have damaged the display cables in the process. So is it worth $80 for a new display assembly? Or should I get an iphone 5S? I went out to get a new sim for my old 4 so I'm stuck on it right now. I was really planning on waiting for the 6 or whatever but now I'm stuck with a slow 4. So do you guys think the display is the problem?