I like to joke that "Iowa is a great place to live, but I wouldn't want to visit." Residents often complain that there's nothing to do (other than milk cows and shuck corn). One can only stand so much antiquing.

But we do have a few things going for us: clean air, relatively light traffic, lots of space, and perhaps the best cell phone plan for the iPhone.

Recently, reader PC Drew, a US Marine living in Japan, sent us a note to let us know about the challenge he had in finding an iPhone plan while visiting his wife's family. A contract plan was out of the question, of course, because of his length of stay and the fact that he's still under a two-year Softbank agreement in Japan. And due to AT&T's, shall we say, "perplexing" lack of a prepaid plan for the iPhone, the official carrier in the States wouldn't help him.

He could have stopped by a Best Buy and picked up an O2 Universal SIM Card for less than $10. That would have provided the ironically-named PC with $0.17 per minute calls but that's it -- no data, no included text messages, and no tethering ability.

After searching a bit for a prepaid solution, he stumbled across the MEGAtalk Nationwide plan from regional GSM carrier, i wireless. This no-contract, no-credit-check offering gives the customer 30 days of unlimited calling, with roaming and long distance, for $49 plus taxes.

But wait, there's more! Not only did PC get unlimited voice minutes, but he also had unlimited SMS texting and, here's the kicker, unlimited data usage. And, with the proper hack, i wireless customers can tether their iPhones for free. Yes, you read that right... free tethering on an unlimited data plan!

Of course, getting a service plan from an unofficial carrier (read: non-AT&T, at least in the United States) requires your iPhone to be SIM-unlocked. This has become much easier over the past two years and most cell phone shops can perform the procedure if you're too nervous. PC had already performed the necessary steps, as he often finds himself in areas that aren't exactly covered by his Softbank contract.

Okay, now for the downer. Because it's a T-Mobile affiliate, i wireless doesn't offer iPhone-compatible 3G service. In fact, they only offer EDGE speeds in their Iowa-based footprint, unless you're traveling to an area with T-Mobile 3G. As a result, that unlimited data is a bit crippled speed-wise, but it's still a heck of a deal.

So, if you're planning on traveling to Iowa -- say, to Fort Madison for the 62nd Annual Tri-State Rodeo in September -- or if you're "lucky" enough to be stuck living here, you might want to take advantage of what's probably the most economical cell phone service plan available for the iPhone anywhere in the USA.

UPDATE: Quite a few readers asked if this plan is available outside of Iowa, so I contacted i wireless directly to find out more about its policy. Yes, you can sign up for this plan, even if you don't live in the i wireless footprint area, however, the representative I spoke with pointed out that this plan may expire at any time, which would seriously affect the customer's ability to use his or her phone effectively. If you are interested in further details, please contact i wireless directly.

DISCLAIMER: I own a computer and cell phone store that sells this particular prepaid plan. But the above story is absolutely true; PC Drew did contact TUAW to brag about his bargain find, without knowing me or my connection to the product.

If you're going on a cruise vacation, don't be concerned about being out of touch. Chances are excellent that you can use your cell phone.

Reader Steven Madow reminded TUAW that many cruise lines use a service called Cellular At Sea to provide you with satellite-linked cellular service. Almost 100 ships currently use the service, which is a joint venture between AT&T Mobility and SeaMobile.

Madow said that with his iPhone, configuration was a simple matter of looking at the settings (right) for a carrier called "Cellular at Sea." The cost of the service varies depending on your home carrier, but for AT&T users it is about $0.79 per minute. While that's not exactly cheap, it's priceless if you need to keep in touch in case of an emergency.

Most cruise lines also provide Wi-Fi based onboard Internet service. Rates for these services usually range from $0.75 per minute down to $0.30 per minute. The more time you prepay, the lower the rate is.

To find out if your favorite cruise ship has Cellular At Sea or Internet service, click the Read link or visit the website for the cruise line.

Thanks for the tip, Steven!

While AT&T is surely going to continue to benefit from being the sole iPhone carrier in the United States, they also stand-out as being expensive. To help cover iPhone subsidies, AT&T is raising the data plan $10 a month. As BusinessWeek mentions, this could be an area that other carriers could seize on. By offering more features for less money, other carriers have an incentive that while not as flashy as the iPhone, might be more financially practical for lots of customers.

Still, as I said in last night's talkcast, I think the $200 price point is going to vastly reduce the barrier to entry for lots and lots of users. The data plan price increase is going to be more a determent for existing iPhone users, not new users to the fold. Just as the iPod really hit its stride when it became available for under $400, the $200 pricepoint on the iPhone is going to be extremely tempting for anyone approaching the end of a cellular contract. The other phone manufacturers SHOULD be concerned; the war for mobile domination will not be won or lost based on the iPhone 3G, but Apple is a very, very deft opponent.