I pay $60 a month for Metro PCS prepaid. I had to import my phone, as it was the cheapest one new off eBay I could find reviews for that was OTG compatible so I could plug a Micro-USB borelight into it, as well as Bluetooth 4.0 compatible for square. Haven't started working yet, so don't know if square works. Was going to use PayPal, signed up, but started getting messed with, and my email is constantly bombed by fake paypal spammail. I read if people put a stop on your money, after doing a job, they can keep it. Say it on YouTube, so said no. Went for square as it is unobtrusive.
Most later edition iPhones should work, iPhone 4s and up. If your buying a phone online, like eBay, look up its bandwidth frequencies and phonecard info listed, double check it, triple check it, THEN once that seems reasonably consistent and you see people in your country discussing bandwidths, head over to your phone company's website and check it out. My phone works on everything by 2g, I get 3 & 4g fine. I had to explain it to the Metro PCS guy how it works, he never saw my phone before, no clue what I was saying in regards to bandwidths.
They typically sell older model iPhones too if you just ask, works on the T-Mobile network. Only places I can't get coverage is in obvious deadspots backside of a hillside in West Virginia well out of line of sight of any tower. I know a handyman who claims to get service on his truck with a cell booster.
You can look online for coverage maps. Not the best for those hidden valleys, but highly accurate in more populated areas. The $60 prepaid plan gives me free roaming. Seriously, check not just the bandwidth but also the card type too.
http://www.sensorly.com/map/4G/US/USA/T ... A|coverageMap of companies offering bandwidth in the US, so you can see in advance. Good idea what sort of refeption., if any.
Its 'unlimited', but threatens to throttle you after 28 GB data. I read a lot, and my only internet it through my phone, so bust through that limit constantly, after downloading movies, or using it as a hotspot (only 8 BG for that though). Even after 28 gigabytes, 95% it won't throttle me, can still usually stream.
I figure once I start pulling in the locksmithing big bucks and feel more secure, will just drop the MetroPCS prepaid and use their T-Mobile contract, paid in full. Hear you can download like 28 Terabites or something similarly absurd on the high end version. I just can't stand contracts, and yet got tired of the 10GB plans for $50+ bucks. I feel pretty good with this, no bills hanging over my head.