This android trick is not common among android users, the magnification gesture lets you zoom in on any on-screen activity on your android device.
This feature is a cool one; you can zoom in on anything on your android screen by simply tapping on your screen.
After you zoom in by triple tapping, you can adjust the zoom level by pinching two fingers together or by spreading them apart. You can zoom out anytime by tapping on the screen three times.
You can also triple tap and hold your screen to temporarily zoom in, when your finger is off your phone, it will automatically zoom out.
Go to settings, select accessibility, then tap on magnification gestures, switch it on by toggling on the button at the top right.