I tried to duplicate this.. If I understand you correctly, you have a wifi connection that is working correctly, then leave the wifi area and your 3G data wont connect. Correct? OK, I connected to wifi and did a speed test to verify that I was getting wifi speeds. Then took a walk down the street until I lost wifi and 3G kicked in. Did another speed test and got 3G speeds. Then walked back to the house and my wifi automatically reconnected and again ran a speed test to verify. It may not matter but my house wifi is "open" i.e.not encrypted.