These are all opinions, but... 1. It gives young people a way to get in contact with an adult if they need help or are in trouble. 2. It allows young people to contact the authorities if they witness a crime, they are hurt, or someone else is hurt. 3. It allows young people to keep in contact with their friends for the purposes of socialization and exchanging information (like when completing a homework assignment.) 4. Since many mobile phones have GPS integrated, if a young person were to become lost they would be easier to find. 5. Smart phones in particular usually have the ability to provide navigation. This can help a young person to get somewhere they are unfamiliar with. I hope this helps!

I wonder if you mean "corroboration?" Corroboration means "evidence that supports my opinion." "Collaboration" means "working together with someone as a team."