Hello 7henrique1993,
Thanks for asking the Apple Support Communities for help with your camera. I am happy to offer an article and info.
If the camera on your iPhone, iPad, or iPod touch isn't working - Apple Support
If you have gone through the entire article and still need help, the next step is to have the camera inspected at an Apple Authorized Service Provider or Apple Store:
If your camera still isn't working, take your device to an Apple Retail Store or Authorized Service Provider for more help."
If you need to have the camera checked, please check this link to prepare for your appointment at an Apple Authorized Service Provider or Apple Store: Get your iPhone, iPad, or iPod touch ready for service - Apple Support
Thanks and have a wonderful day.