Juan

when I touch the upper back, or when I put the iPhone on the table, I hear a slight noise as if some part or screw is...

It's weird, when I hit repeatedly smooth the back and top of the iphone, I hear the sound. But if I make the same shot in the lower back, the sound does not occur. I feel that something is loose. Also if I make the same in the front of the iphone, I do not esucho no sound or noise. I hope other comments. thanks

Hello, Is it necessary to do step 13 to 18 if I only want to change the battery?

What does can happen if I don’t make all step?