On iPhone, you dont really need to use any third-party tools to capture a screenshot.
Its surprisingly easy; you just have to press the Volume Up + Power button together.
How to Take Full Page Screenshots on iPhone?

To do that, follow these simple steps.
To get started, open a webpage where you want to capture a full page screenshot.
Press theVolume Up + Powerbutton to capture the screenshot.

The screen will flash to indicate the screenshot has been taken.
A small thumbnail will appear in the bottom left corner, showing you the screenshot preview.
Before the preview disappears, tap on it to reveal the screenshot editing options.

You will get two choices at the top: Screen and Full Page.
To save the full page screenshot, tap on the Full Page.
You will now be able to see the full-page screenshot.

On the same screen, it’s possible for you to edit your screenshot.
you’re able to crop the screenshot, add text, use the annotation tools, etc.
Tap theDonebutton at the top left corner to save the full page screenshot.

On the prompt that appears, selectSave All to Photos and Files.
Simply fire up the Photos app and find the full-page screenshot.
Capturing a full-page screenshot on an iPhone is easy, and you wont have to use a dedicated app.

Yes, third-party apps are available, but the native one is easier to use.
How to Hide Apps in Realme Phones
Google Chrome Not Saving Password?
8 Ways to Fix it
How To Fix Mobile Hotspot Connected but No Internet on Android
