I don't understand the nitty gritty technical details of the way the iPhone's antenna works, so I'm not completely positive how a software fix can solve an issue caused by holding the phone incorrectly. Luckily, I haven't experienced any dropped calls myself — no matter which hand holds the phone — but here's hoping the new software fix does solve the issue for iPhone 4 users, even those who choose not to use a case!
According to users of Apple's tech support forums, a software fix for the new iPhone's reception problems could be coming early this week. iOS 4.0.1 should be shipping shortly, if the reports are accurate — related posts in Apple's tech support forum have since been removed. So, is the reception problem an issue of users holding the phone incorrectly, or is it a bigger problem? Granted, blocking the antenna on any phone will resort in dropped calls, though I wasn't happy with Apple's defense — or their suggestion that a $30 case is necessary for the phone to operate properly.