Filed under: iPhoneWe've received several tips over the weekend from iOS 4 users who are having trouble connecting to their car stereos. A search of Apple's discussion boards revealed that they're not alone.
Here's what's going on: A number of stereo units from Pioneer, JVC and others are giving a "device incompatible" message when connected to an iPhone running iOS 4. Note that the 3G and 3GS phones in question worked fine with these stereos when they were on iOS 3.1.3. Of course, the iPhone 4 only runs iOS 4, but since the older phones are also affected it seems likely that this is a software issue, not a hardware one.
