What's the difference between kindle free 3G+wi-fi and kindle wifi?
That means: Kindle 3G (Free 3G + Wi-Fi) is the easiest option because there is no wireless setup-you are ready to shop, purchase, and read right out of the box. Built-in Free 3G connectivity uses the same wireless signals that cell phones use, but there are no monthly fees or commitments-Amazon pays for Kindle's 3G wireless connectivity. The added convenience of 3G enables you to download books anytime, anywhere, while on the go-without having to find a Wi-Fi hotspot connection. With wireless coverage in over 100 countries and territories, Kindle 3G is a great option for travelers
Now Amazon have Cut! The price of Newest Kindle3 ( free 3G+ wifi ) form $189 to $139 sales. You can save $50. Let's see the site below more details of kindles version and spec price compare. And more kindle accessories too
Choose WiFi+3G if you wish to download ebooks or browse the web when away from a WiFi hotspot. An ereader with 3G support will be able to connect like a cell phone. Unlike a cell phone, however, there is no monthly fee for Kindle's 3G service. There is also no charge to browse the web via your own or other free WiFi hotspots. Note, though, that the web browser on Kindle isn't so great. Also, once an ebook is downloaded, neither WiFi nor 3G is needed to read it.