They are useful when used properly, but can be a time waster. I personally only own a phone. I have no computer. When I need one I just use my parents ones.I think that my parents are considering getting me a phone for christmas, which is great, but I don't really think I want one? I'm worried I'll get addicted to it, and I don't really need one, outside of taking pictures on my own and doing projects in school. (one of my history projects this year required a couple apps, but luckily it was a group project, so someone else could do the phone stuff) it'd be nice, but I'm just worried it would mess me up.