According to the July ChangeWave survey, iPhone 4 users reported a better dropped call rating than users of the iPhone 3GS. iPhone 4 users reported a dropped call rating of 5.2%, compared with 6.3% for the iPhone 3GS. Despite this encouraging statistic, the iPhone 4’s customer satisfaction ratings were significantly lower than the iPhone 3GS’ one month after its release. 72% of iPhone 4 owners reported being very satisfied with the device,…