Screen Black or photos fail to save when you attempt to take photo on iPhone/iPad
To resolve this, simply do the following:
If you attempt to take a photo and the screen is black, it means, barring the obvious that your device case is not covering the camera lens, that somewhere along the line when you installed the application you denied the operating system privileges to access the camera on the device. Meaning you blocked the app’s access by clicking NO to a prompt.
Video Tutorial: https://youtu.be/ewZ8yHPrZw0