The iPhone is slowly making it's way around the world. In Canada, there are now four major carriers that support the device: Rogers, Fido, Telus and Bell. So how will Apple continue to stock and support the iPhone with that many carriers? That's where the story get's interesting.

According to iPhoneInCanada.ca, to make stocking and inventory easier, the iPhones in Apple's Canadian retail stores will arrive completely unlocked without any SIM card. Once a carrier is chosen and a SIM card is placed in the device, it will then be locked to that carrier. So what happens if you put in a SIM card from a carrier other than the four in Canada? The simple answer: we have no idea!

While we're not entirely sure what this means, it does present some interesting ideas. The Canadian iPhones could only recognize the four possible carrier's SIM cards, but may also be entirely unlocked. It'll be interesting to see how people that want to use the iPhone on unsupported carriers will take this news.

Aera is a new flight game [iTunes store] from iChromo with beautifully rendered graphics and some challenging game-play. I wouldn't exactly call it a flight simulator, as your control of the aircraft is limited. You can't bank left or right, but you do control your up and down pitch. The game is priced at US$2.99 for the iPhone and iPod touch.

Think of Aera as a 2D shooter with exceptionally good graphics and addictive missions that can draw you deeply into the game.

There are several different mission types. In some, you collect points by flying the plane into floating objects, and in others you need to avoid those floating objects. There are also missions where you have to do both, as well as dogfights and aerobatic flights.

Because the controls do not work in the way other flight games work, it's helpful to go through the quick in-game tutorial so you know how the game works. If you try to exit the tutorial and just start playing, you'll be brought back to the tutorial until you have finished it. It really is necessary, because you'll never be able to fly successfully without going through it.

The game also features multiplayer options for other owners of the sim who are on the same wireless network. Aera also features video replay, allowing you to watch yourself crash and burn.

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.

The iPhone seems like it should be the perfect companion for the international traveler. Not only can it make phone calls in pretty much any country, it can also help keep you entertained on long flights. You can even use it to hold your flight itinerary and other important info like hotel and car reservations. But if you're an international iPhone owner and you were planning on using the device to its fullest potential during your trip to the United States, such as keeping track of e-mail, surfing the Internet, checking weather, getting driving directions, or even making cheap phone calls, then I have some very shocking news for you, delivered courtesy of everyone's favorite telecommunications conglomerate, AT&T.

Before a recent vacation to visit with family in the US, I decided that instead of paying for international roaming rates that are tantamount to armed robbery (US$2.42 a minute for phone calls and up to US$19 per megabyte of data -- totally not kidding), I'd instead perform a trick that savvy international travelers have pulled for years: upon arriving in the States, I'd visit an AT&T store, purchase a SIM and pre-paid plan from them, and reap the benefits of far lower charges for voice calls. Though I'd still suffer exorbitant data rates, I was aware beforehand that the lovely folks at AT&T had already discontinued pre-paid data plans for the iPhone. Still, at least I'd be able to make cheaper calls to my family if necessary; or so I thought.

I first came across developer NinjaBee by playing their XBLA platfomer Cloning Clyde -- it was a game that seemed pretty genre, until you started playing it and discovered a unique charm and depth. Since then, they've brought that flair to a few other types of games, including the turn-based strategy RPG Band of Bugs and Xbox Live's Kingdom for Kieflings, and now they've arrived on the iPhone by porting their original XBLA spaceport business sim Outpost Kaloki X and renaming it as Kaloki Adventure.

I liked Kaloki on Xbox Live and I still like it on the iPhone. The graphics have taken a hit -- the textures don't seem as clear and the menus are a little more functional than good-looking, but the solid core of gameplay is definitely still here in spades. The idea is that you're running a space station with a limited number of expansion slots on it, and you can put various expansions in each of those slots -- some will give you more power (which you can use to grow bigger expansions), and some will make you more money (which you can use to build more power). The idea is to satisfy your power needs, make money, and keep your customers happy all at the same time, turning your space station from a tiny little lemonade stand off the back end of Jupiter into a thriving powerhouse of space commerce.

I finally updated my iPhone to 2.2.1 today, and after a reboot I got the screen that says it needs to verify or authenticate the SIM card. Unfortunately, that failed because, while I do have a SIM card in there, I do not have AT&T service -- and I had the cell radio turned off. My iPhone is never used as a phone (I don't have T-Mobile in my area, so even unlocking it would be useless). I wound up restoring the iPhone, which took a couple of hours, but apparently there's a better way.

Danny Goodman on the Apple Discussion boards posts this "2.2.1 Upgrade and SIM Error (and Solution)" tip. My advice? Always turn off Airplane Mode before applying a firmware update. The phone wants to access the radio hardware during the upgrade, it seems, and disabling the cell radio makes this impossible. Thus, I was locked out of my phone for several hours today. As luck would have it, I stumbled upon this tip about 5 minutes after I started the restore process.

Following up on the iPhone 1.1.1 jailbreak, iPhone SIMfree--they are the commercial unlock folks--have announced a 1.1.1 upgrade and a 1.1.1 unlock solution. Moreover, they believe their unlock solution will restore and repair iBricks: "This now means that SimFree v1.6 release, is now capable of completely restoring/repairing software unlocked "bricked" iPhone". TUAW has not had the opportunity to try this out ourselves, so for now we're just passing along the link to the iPSF site. Let us know in the comments if you were able to unbrick and/or update to 1.1.1.

iPhoneSIMFree is available from various vendors around the world and costs about US$60-$100.

Update: TUAW Reader Matthew Fliegle writes: I am on AT&T, and I installed the IPSF 2.6 using WiNstaller (on 1.0.2 with 4.01bb). It took about five minutes with no error messages. Then I restarted the phone and a error popped up saying invalid sim. I connected it to iTunes and clicked update. That took another 5 to 10 minutes, and then it made me reactivate it with AT&T. The only thing bad is that it made me renew my contract for another 2 years, but I called AT&T and they said I shouldn't have had to renew it and they were putting it under review.

The iPhone Dev Team has released a simple-to-use GUI tool that allows you to unlock your iPhone for use with any SIM. The tool, which is based on their previous command-line work, provides one-touch speedy unlocking. This is a big improvement on the first generation release. It no longer requires you to use special files or to dump nor data.

You can download your copy from the DevTeam website, as a PXL package or, soon, from Installer.app. "Wheat" is the guy responsible for those amazing graphics.

Find out more at the #iphone channel at irc.osx86.hu. Remember, this is early software and unstable. If risk isn't your thing, you'll probably want to wait a few days or weeks for things to stabilize.

Update: After reports of failed unlocks, Sam has updated the version to fix a timing issue. Current version is now 1.0.1, which solves the timing issue.

Update 2: I know of a youtube hack and have heard third-hand of a Visual Voicemail hack. Will post when I have details.

Well that's it. Engadget revealed that iPhoneSIMfree's unlocking solution is up and running today, and they're now on sale (in fact, our Weblogs, Inc. brethren are giving them away as we speak). Hype, prices, and sketchy profiteering aside, what's done seems to be done. If you want your iPhone unlocked, have at it.

Why aren't the Mac faithful more excited? Europeans are definitely interested-- we've already heard from a few of them, including reader Callum, who really want to use their iPhones. But from my general sense of the population, iPhone owners, especially Cult of Mac folks, aren't jumping at the chance. Gadgetheads like Engadget love it, but you TUAWers, despite the AT&T hate (which I share, and I'm not even an AT&T customer yet), aren't that into an unlock. As Engadget says, the iPhone hackers aren't going to bother to reverse engineer iPhoneSIMfree's solution. The whole community seems to be saying, "meh."

Part of the problem is the warranty, I'd expect-- that's why I'm not going to unlock my iPhone when I eventually pick it up. And the other part is the fact that I'm sticking with Apple, even if they price drop in another few months and require me to be with AT&T. I want my iPhone to do everything it can, and if this unlock breaks anything, or won't vibe with the Visual Voicemail, or who knows what else, then iPhoneSIMfree can keep their $100 offer.

But enough about what I want-- let's ask you, TUAWers. What do you think of the unlock?



Thanks to everyone who sent this in!

Very late last night, I chatted with Ryan Block of Engadget. At that time, he was happily engaged in making calls on his iPhone using a T-Mobile SIM. Today Engadget announces a full iPhone software-only unlock. According to Ryan, this unlock comes courtesy of iPhone SIM Free.com. I haven't personally tried out the unlock but Ryan writes that he can confirm "100% certainty that iPhoneSIMfree.com's software solution completely SIM unlocks the iPhone, is restore-resistant, and should make the iPhone fully functional for users outside of the US".

So what does this mean? It means that the iPhone just went International. You can use any SIM on the iPhone using tools like iASign and iActivator, and with the same limitations: namely no Visual Voicemail or YouTube video (at least not without a hack) and your minutes and data are charged per the plan associated with the SIM. Also the phone number seems to go MIA in iTunes, which lists it as "N/A".

The unlock adds a new option to Settings. See the picture at the top of this post. Ryan says you'll be able to use this to select your preferred network and avoid roaming. A new EDGE network settings appears in General > Network, allowing you to enter your carrier's access point name and username/password.

Is this method restore and upgrade resistant, as the iPhoneSIMFree guys claim? Ryan factory-restored his iPhone with the 1.0.2 firmware and the unlock stuck around.

The iPhoneSIMFree site is pretty light on details. They write that they intend to launch the unlock as a commercial product for both individual and bulk purchase sales.

Bottom line: is this for realsies? Ryan and Engadget says absolutely yes. They are standing by their tests.

If you've been wanting to activate your iPhone without iTunes so you can use a non-iPhone AT&T/Cingular SIM, or you just want to use your iPhone as an iPhonePod, I have some good news for you. The guys over at ModMyiPhone have introduced a program that doesn't require you to work from the command line.

Not everyone loves the command line. It's a basic fact. And, for those of you who have been waiting for a real application that avoids using Terminal commands, point your web browser at this page. iActivator wraps a GUI around iPhone activation, and makes it simple to use the jailbreak, iASign and iPhoneInterface tools.

For those of you still worried about turning your iPhone into an iBrick, keep in mind that this is still early software. You may want to wait a few weeks for the software (and the hacking tools that underlie the application) to gain stability. Also, be aware that the public link seems to be down. You may have to sign up for a (free) account before being allowed to download the members-only version. A final note: it's unclear whether this is a Universal binary solution or (as I'm guessing) Intel-only.

Thanks Kyle

Were you planning on buying an iPhone, bringing it home and immediately swapping out the SIM card? AT&T says no. Their recently posted iPhone FAQ states that your iPhone must be activated (i.e. through iTunes, with a credit card and a two year calling plan) before the phone can be used. You can't just swap out your current SIM card and start right away. Apple's Q&A adds (rather unhelpfully) that you "should use the SIM card that came preinstalled in the iPhone", giving no hint as to whether a SIM swap is possible.

As I posted yesterday, activating the iPhone restarts the 2-year calling plan clock, regardless of whether you're an existing customer or not.

Thanks, Ryan Valle.

Update via David Pogue: "Can I use a SIM card from another phone? The iPhone comes with an installed SIM card, the tiny circuit board that stores your account information and phone number. Apple says that you should be able to replace it with any recent AT&T card, once you activate it in iTunes. No other company's SIM card works in the iPhone."

Over at iPhone Matters, Tanner Godarzi asks whether you'll be able to buy an iPhone without a new contract, speculating that stores with extra inventory may allow just that. I think that's pretty unlikely. The commercials clearly state "Use requires a minimum new 2-year activation plan". Godarzi also suggests that you might be able to add an iPhone to an existing AT&T contract, which sounds at least a bit more realistic to me.

Contract details, specifically the complete lack of them, continue to keep many possible customers away from making their purchasing decisions. How many people do you know who have said "I might get an iPhone--if it turns out I can afford it"? With rumors of $70 per month data plans, it could be a very expensive choice.