These are three useful tricks for mobile phones – both for iOS and Android smartphone – that you might have not known.
1. Clean smartphone screen
If you are one of those who use a screen protector particularly a plastic one, there is a useful way to repair scratches on it.
In order to remove all the scratches, all you need to do is to get a toothpaste tube and squeeze it onto your screen. However, if your smartphone is not a waterproof one, you should put it on a screen protector, rub it all the way in, leave it for about five minutes and later wipe it off with a cloth.
Avoid using the toothpaste on a glass display since it could ruin the screen.
2. Use earphones button for camera clicks
A helpful function of earphones is that when you plug them in, if they have a remote on them, then you can use its button to take a photo remotely. That is also true for bluetooth earphones if you pair your bluetooth earphones.
You can take a photo remotely if your bluetooth earphones have a button by launching the camera and clicking the pause/play button. This is a great trick for taking group photos.

3. Free screen on a plane
Not all planes have a personal screen for each person to entertain. That doesn’t mean you always have to go without it. All you need to do is to download a film onto your smartphone in advance, or use inflight WiFi, provided that it is available.
If you don’t want to hold your smartphone up all flight long, you should prepare a zip bag beforehand and make a small hole next to the bottom for the audio cord. Then put the phone at the bottom of the bag, pull the tray down a bit, and stuff the end of the bag between the seat and the tray, and seal the tray.