Step 1: Open the page that you want to take a scrolling screenshot of and take a standard screenshot. You will see the floating screenshot on the bottom left corner of the screen.
- Take a screenshot by pressing the Volume Up button and Power / Side button at the same time.
Step 2: Now, tap on the floating screenshot preview and tap on Full Page button situated on the top.
Step 3: You will see a slider on the left which will give you a highlight of the entire page that you're taking the full page screenshot of. All you have to do is hold and drag the slider down to take the full page screenshot.
Step 4: Lastly, tap on Done and save it.
That's all there is to it, folks. If you follow the guide properly, you will be able to take a normal and a full page scrolling screenshot on your new iPhone 12 and iPhone 12 Pro models.