- Jobs said during the keynote announcement that the SIM card slot was on the top of the phone, near the headphone jack. That implies an accessible SIM. From 12:50 in the
iPhone introduction: "So let's take a look at the top now. We've got a headset jack, 3.5mm, all your iPod headphones fit right in.
We've got a place, a little tray, for your SIM card. And we've got one switch for sleep and wake. Push it to go to sleep, push it to take up." Why would you mention, when talking about *external* physical features of the iPhone, that there is a place, "a little tray", for the SIM card if it wasn't externally/user-accessible?
- Even if AT&T is the "exclusive" provider for 5 years, it still remains to be seen how iPhones will be able to be obtained with/without calling plans/contracts/etc. iPhone may represent a new model of unsubsidized phone sales.
- Even if iPhone is "locked" to AT&T (a common practice for US GSM carriers), ALL GSM phones to date are able to be unlocked, e.g., for international usage with prepaid SIM cards, etc. If iPhone isn't able to be unlocked for such use, it would be the first phone from any US GSM carrier that I've seen that wouldn't be.
- There is NO TECHNICAL REASON iPhone couldn't work on any GSM carrier. *Of course* things like visual voicemail won't work, but GSM is a standard, and at a minimum, the basic data/voice functionality of the phone will work on any GSM carrier with a valid SIM. This presumes that there will be an way to get Cingular to unlock the phone, e.g., for international travel, which, yes, they do in fact do routinely, AND that the SIM slot is accessible. (If the SIM slot is not user-accessible, this may be the justification for keeping iPhone locked to only AT&T.)
- Some people have said some ridiculous things in other threads about "WiFi probably only works if you have a plan", etc. This is ridiculous. I don't even need to see the phone to know that WiFi will absolutely work without a plan. It would be stupid for the phone to be set up any other way. (Imagine a scenario where you are out of range of ALL GSM carriers - that's the only way iPhone would know if it has any sort of service agreement - in that scenario, why on earth would WiFi not work? Answer: of course it would. And it's silly to say that WiFi would only work if you had a plan; that's like saying the iPod functionality will only work if you keep paying your bill. The ONLY thing that won't work without a plan is things that depend on the phone functionality/GSM service).