Some of us here at Engadget can remember a time when cellphones on college campuses were strictly "for emergencies" (read: calls home to Mom and Dad). By now, of course, things have changed: Our handsets come with us everywhere, and most of us don't have to worry about pissing off our parents by exceeding our minutes allotment. We imagine many of today's college freshmen already have phones, but for those of you who've earned an upgrade, we crammed five into our back-to-school guide, including some budget options. Not in the market yet for a new phone? You might still want an external battery pack, a fast microSDXC card or, heaven forbid, a "selfie case," which is definitely a thing.