Yes but only on the mobile version. You can purchase a micro sim on pay as you go, that will provide access to the internet.
Only if you want to use it on your 3G iPad.
Wi Fi and 3G
If you do purchase an iPad with 3G, you will not need home wireless internet. But you can also connect to a home wireless internet with an iPad with 3G. You will need to pay monthly for the AT&T 3G fees.
No.
The iPad accesses the web via its Wi-Fi or 3G connection (if you have a 3G model).
Ipad or Ipad WIFI can access WiFi network ( like Ipod touch) where as IPad 3g has SIM card slot and can access internet where WiFi networks are not available ( you require Data Plan from AT&T in US) for Ipad 3G if you want to access internet where WiFi network is not available. What happens if you cancel the monthly payment on the Ipad 3g, does it still work?
In the related links you'll find a picture of an iPad with two things circled; the 3G sensor at the top and the number of GB. If your iPad has a 3G sensor then it is a WiFi + 3G iPad and if it doesn't then it's just a WiFi iPad. Also it shows the number of GB.
No, you cannot. The iPad requires different hardware which enables it to receive a 3G signal from your carrier. The wi-fi model of the iPad does not have the black piece on the top of the back. the black piece is what receives the signal.
No. Only the iPad 2 has FaceTime.
I have an ipad 3g and it has a Sim card, i don't know if it is a micro sim, it looks just like the Sim cardd in an iphone. There are two kinds of ipad and the ipad 3g does have one and the ipad wifi does not.
No you only have to have a 3G plan with the 3G model, those are $129 more than the wifi iPad.
Wi-Fi, Bluetooth and 3G (for 3G models).