After Batteriy Repair I have 2 Problems...

Hi,

3 days ago i changed the battery of my Iphone 5. The problem was, that the battery stucked. So i tried to get the battery out of the case. At the end I was succesfull and I changed it.

After this i tried to turn the display to the right side and saw, that the phone didnt react.

The second problem was, that if I make a video with the main camera, the sound only works sometimes...

I reopened it and looked for loose cable, pushed every cable and closed it. Nothing happened. My problem still exist...

But the batterie power is much better than before :D

Did I damaged something in my Iphone?

Are the problems be connected? Maybe with a cable? I am relative sure, that I didn´t damage the other parts of my iphone..

Greetings from Germany (I hope that my english was not too bad)