I have this issue on my iPhone 7 Plus. I changed the screen and the home button works fine. The front camera and ear speaker didn’t work. I changed the front camera piece with a new one. The ear speaker works, but front camera does not. I have no idea what the problem is. Help :( Also, I changed the screen for a friend. Same issue happened. Ear speaker work, but camera does not. There is no way this could happen to me twice, I mean, I have no idea. I did apply heat to easily remove and avoid tearing up the front ribbon cables. From reading this, I get that might have caused a problem. What do you guys suggest? I got a new front camera part coming in as a replacement for the iPhone 7 Plus. I have to see wat happens.