When the image you want to save is displayed, keep tapping it.

You will see a button that says "Save Image".

To view the saved image, open the Photos app, which is provided from the beginning of the device, and select Camera Roll from the album of the Photos app. You can see the saved images in the Camera Roll.

Tap the arrow icon in the lower left corner to upload the image to e-mail or SNS.

Some images may not show the "Save Image" button even if you keep tapping it. In this case, you can save the entire screen by pressing the power button and the simultaneous button at the same time. When the screen flips white for a moment and you hear the shutter sound, the image is saved.

Open the Photos app in the same way. The image has been saved. The image is now saved, but it contains unnecessary parts, so we need to crop it.

Tap the "Edit" button in the upper right corner, followed by the "Trim" button in the bottom right corner, and enclose only the part you want to keep in a square frame.

Once you have done so, tap the "Trim" button in the upper right corner, and tap "Save" if you are satisfied.