As for the SIM, I’m pretty sure there is a little door at the top, between the headphone jack and the wake-up switch. You can see it in the photos here:

However, whether or not it comes pre-equipped with an AT&T SIM already or you have to add it, we won’t know until Friday. However, WSJ’s Mossberg just wrote that you can’t use T-Mobile SIMs and that the iPhone is locked.

It’s possible that this is just for the demo version of his phone–again, we’ll see on Friday. Personally, I have a hard time understanding why, if someone so wanted an iPhone and were willing to buy it and be contractually bound for two years of AT&T service, why AT&T would care if the phone could be used on T-Mobile’s service as well?

As a current AT&T customer, I think these AT&T plans are actually going to end up saving me about $10/month (except the up-front cost of the phone, of course). Really glad to see the all-you-can eat data plan with some text messaging thrown in.

Anyone living in the DC area planning on waiting in line? I think I’m heading for the Fashion Centre at Pentagon City, but I’m still trying to figure out logistics. At least at that mall, people can’t camp out!

Actually, the iPhone has an airplane mode built right in, so that shouldn’t be an issue.

Hold your nerve buddy, stay with us!!! Don’t get tempted….
Just think how upset you would be when you get your iPhone and you go to get on a plane without packing an extra iPod and it gets to the bit where the flight attendant calls for all cellphones to be switched off!!! Doh! there goes that 6 hours you wasted encoding some video for the trip!

I’m getting a phone as of today but that’s subject to change if the lines start too early or if I just decide not to wait. Stay tuned. The self activation service is really great and tells me this may not have a removable SIM chip at all. But that’s pure speculation.