Buy a car or a new phone?

You should get in touch with an insurance company and try for a quote - car insurance for college age males is basically the highest of any demographic even if you've had no accidents. 200 a month might not even be able to cover ongoing insurance costs depending what you drive and where (fast cars and big cities are worse).

I can't tell if you live with your parents; if you do you can sometimes save money by getting put on their policy. Really though calling an insurance company's probably the fastest way to find out.