-- Posted by T E C H N O at 4:35 pm on July 8, 2008 I'm reviewing Sprint phones, but google is going way to slow.. So what exactly is EVDO, and what are the functions? -- Posted by marshmellowman at 4:36 pm on July 8, 2008 3G, stands for Evolution-Data Optimized. It's just a faster connection so that the Internet browsing is much faster on your phone as opposed to just using EDGE. UMTS/W-CDMA and HSDPA are also 3G services. -- Posted by ThatGuy411 at 4:36 pm on July 8, 2008 it's like a digital cell phone signal