I never thought it would be so easy to take screenshots of iPhone display screen, just a few simple steps:
- Go to the display you want to take screenshot of.
- Press and hold the Home button.
- Quickly press the Standby button (The one on the top which is used to switch off the display. Your will hear the snap sound.
- Your screenshot is taken, go to Photos and you can see it there and use it the way you want to.