No, that crummy connection from AT&T on your iPhone is not your imagination. According to some new research from ChangeWave research, AT&T (T) drops three times as many calls as Verizon (VZ). The issues of whose network is better was the heart of Luke Wilson's war. Looks like AT&T is losing. ChangeWave says that in a  survey of 4,040 consumers using North American mobile carriers, Verizon customers reported only 1.5% of their calls being dropped over the past three months, the lowest in the  industry. AT&T reached its all time worst rating in this measure, with customers reporting 4.5% of calls dropped in the last three months. AT&T finished last in the March survey of North American mobile providers. Sprint finished second with 2.4% of calls dropped, and T-Mobile finished third with 2.8% of calls dropped.  The trend shows  an increasing number of dropped calls among AT&T customers surveyed and a decreasing number of dropped calls for Verizon customers.