Hello Xgames9,
Welcome to Apple Support Communities!
We understand that the camera screen is black when you try to take a photo and also some letters on the keyboard aren't working. We're happy to help!
For the issue with the camera being black when trying to take a photo try the steps provided in the article below.
If the camera or flash on your iPhone, iPad, or iPod touch isn't working
For the issue with the keyboard try the steps in this article:
About the keyboards settings on your iPhone, iPad, and iPod touch
Let us know if you have any questions.
Thank you for using Apple Support Communities.
Take care!