Do we need cell phones on campus?

<p>It seems that Verizon is the best choice, although I’m interested in iPhone.
Someone told me that I couldn’t have a 2 year contract unless I got the SSN. And actually I won’t have one as soon as arriving at the campus.
Anyway, what do you call the Verizon stuff instead of “tele company”? To be honest, I just made up this phrase myself, haha. Yeah, I’m an international student.</p>