My wireless router from time to time poops out and I lose connection to it from my phone & laptops. I have to restart the router and it pops back up. When this happens, I lose all internet on my phone until I reboot because I assume the phone stops 3G when wi-fi is turned on. This morning this happened again so I restarted the router. When I did, a bunch of emails streamed into my phone. Not a huge deal but will my phone calls not come through when this happens too? I don't want to risk missing calls because my wi-fi is down. I assume the calls would still come through but I wanted to see if anyone else had this issue. I wish the phone would switch to 3G when a wi-fi connection is down but I guess that's not possible.