AJ, u r right, it doesnt have it built in, but both are available by the little plug in thing that comes in the box and plugs in the side of the unit once u get the 3G card, which both the Samsung and IPad2 need as well. The difference ofcourse, is those other units have the cards hidden as opposed to having a small square thing attached to the side like this one.
The Samsung one is good, I think this one and the Samsung one look almost identical. As time goes on, If i need more of anything, i can always pass this to one of the kids n upgrade up but so far, it does everything i need it to, and the savings $ were the real reason.
The reason i thought this would be worth a go, is that if i ever left it somewhere accidentally, or if it was in my car whilst i was out n about, the replacement cost would be under $200, but the more expensive IPad etc, would run me up $750. Knowing my luck, i would leave it somewhere or someone would nick it from my car.
If ya get the Samsung one, let us know how u go with it. It is apparently, also very very good.