Any time data is coming in on you device, it will go straight to voice mail with CDMA. So if it was doint a reconcile or sending any data update to the device and a phone call came in, it would go straight to voice mail. I get lots of email and lots of synching so this would happen to me all the time, if I had a CDMA device. This is one reason, I like GSM/GPRS like T-Mobile. Voice takes precedence over data.