Mobiles are good inventions, they make writing messages a lot easier. You can find a lot in internet, social media, videos, tutorials and more. Mobiles are good in some situations, when someone talking other language ask you anything, phone will translate everything for you on all languages. Also internet functions on phone cant work without Wi-Fi. Phone can be harmful in some ways, they product waves, that can damage your health. Phones can make people obsessed by them, with online games and other similar stuff, phone distract you from reality, it can make you be late or tired because you didn't sleep whole night playing phone games. Phones are very good invention, but people should use it less and sensibly.