Should I get at&t, Sprint, or Verizon for an iphone?

Help me choose I'm new to this.

Depends on where you live. Verizon and Sprint are nice because of the have at least 3G/4G anywhere that you get cell coverage.AT&T lacks 3G at all locations, and instead you sometimes find yourself with this super slow data called EDGE, or "E". If you live in a city or anywhere around one, you should probably be fine with getting AT&T, and it's probably the second most expensive, while Verizon is the most expensive and Sprint is the least expensive.

Verizon is probably the best carrier to buy your iPhone from, but like I said already, the most expensive.
Just weigh your options.

Don't get an iphone they suck.

Get the galaxy s3

What Logan said, I'd go with Sprint if your okay with the 3rd best carrier, Sprint's major benefit is unlimited data, my 4S was pretty fast on Sprint 3G and I haven't gotten 4G LTE on my iphone 5 yet but a lot of people that have say it's faster than AT&T's 4G LTE

Where i live, Verizon has the best speeds and reliable connections. I had AT&T and the phone would hardly work in my house and in my shop.

if you travel internationally, AT&T has the edge