Yes
It takes about half an hour (30 mins.) on my iPhone 4, 40-50 mins. on 3G and 3GS and even faster on iPad 2,3 and iPhone 4s, 5!
iPhone/iPod Touch/iPad iPhone: 1G, 2G, 3G, 3GS, 4 iPod Touch: 1G, 2G, 3G iPad
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.
Yes
The iPad comes with it's own internet browser called safari. It can be used in Wi-Fi hotspots and anywhere if you have a 3G plan for a 3G iPad.
Yes, the iPhone 3G has Wi Fi.
With WiFi or a 3G connection.
. Yes...How?
3G is the service for things like the internet... just like in the old iphone there is Edge.
You get faster internet then the original iPhone.
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.
That's not possible, You can only Use the Internet on Wi-Fi or Wi-Fi and 3G on 3G Models of the iPad.