So today i captured some photo from my mobile phone and I am using mi note 7 pro today .
I focus on the target, and set the screen of the mobile phone to the target and only gently touch it. Then the shape of a round or square yellow color can be seen. That's your focus point. The focus is only on the one that is above your focus point There will be more brightness and sharpness than anything else around.
You can use G cam app for capturing good photo .