Which coding language should I learn next?

Just finished my first year of college for computer science, and I learned C++. What should I go for next. I'm thinking app designing languages, and I have an iPhone. Should I go for Swift?

None of that really matters as far as getting a job when you are out, what you learn in college is a tiny fraction of what you actually learn in a real job.

If you're considering making iPhone apps, then yes, learn Swift (although this language is currently changing pretty rapidly when compared to older languages like C++, I did Swift last semester at Uni (my Uni was one of the first in the world to teach it) but some of what I've learned is already outdated and with Swift 2.0 coming out later this year, it's going to change even more).

You should also consider Android development too, you don't need an Android device to test your apps (the industry prefers hiring developers that can work on both nowadays).