Symptom: When booting or navigating the iPhone screen is zoomed in.
Cause: The zoom option was turned on and the screen was double tapped with 3 fingers.
Fix: Apple introduced a zoom feature which allows you to zoom by taping the screen with 3 fingers. If your screen is zoomed in like the pictures above tap the screen with 3 fingers and it will go back to normal. The zoom option can be found in settings -> general -> accessibility -> zoom. Turn it OFF if you do not want to repeat said issue.