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, compared to 82% of iPhone 3GS users who reported the same level of satisfaction in August 2009. 21% of iPhone 4 owners said they were somewhat satisfied with the device, compared to 17% of iPhone 3GS owners last August. The iPhone 4’s screen resolution ranked as the top thing iPhone 4 owners like most about the device, while the requirement of using AT&T is their biggest dislike, by a small margin over the coverage/speed/quality of AT&T’s 3G network and antenna issues. ChangeWave’s survey is based on the reactions and opinions of 213 Apple iPhone 4 owners.