What's the difference with the iPad wifi and the iPad wifi+3G
I can't figure out what the difference between the iPad wifi and the iPad wifi+3G is....
The iPad models with 3G capabilities will allow you to buy 3G cellular data from a provider (ATT in the USA) for use when WiFi is not available. Plus the 3G data capable models offer location services via cellular and Assisted GPS technologies according to www.apple.com/ipad/specs/
Will you be able to access the A-GPS functionality without paying for an active data connection?
With out cell data it would just be gps since you wouldn't have the "assisted" part, but you should be able to use the gps with out data it will just take a bit longer to pin point your location.
The tech specs say they both have the compass, but only the WiFi + 3G has assisted GPS. Do you think that the location aware apps will only work on the 3G models?
Yes - without the 3G you will get no location based app nor mapping and navigation apps
Actually, no, without the 3G you'll also support location aware apps, only through WiFi geolocation. Apple uses the infrastructure from Skyhook Wireless, which is also used on the iPod touch. Precision is not as good, though.
That was the only thing I was confused about. So the wifi only ones have no GPS... thats a real bummer.
That would seem odd since I think the itouch has a GPS, though, if that is the case, i wait for the 3G version I guess.
The iPod touch doesn't really have GPS. It uses SkyHook to show location information based on their database of wifi routers and locations.