Will existing accessories and cases for the iPhone 3G fit the iPhone 3G S?
Given that the form factor hasn’t changed at all, cases should fit. It also appears that any dock-connector or headphone-jack accessory that works with the iPhone 3G will work with the iPhone 3G S. On the other hand, Apple has whipped out a surprise or two in the past related to new capabilities (as well as limitations) of the dock connector port, so we can’t swear all dock-connector accessories will work. But the most likely scenario is that all existing accessories will work with the iPhone 3G S. And don’t forget that one of the cool new features of iPhone Software 3.0 is the capability for iPhone software to work directly with hardware accessories. All iPhones and iPod touches should gain this functionality through the 3.0 software, but since the hardware differs between the models, we don’t yet know if there will be hardware accessories that work with the 3G but not the 3G S. (We’re pretty sure there will be accessories that take advantage of new hardware features of the iPhone 3G
Given that the form factor hasn’t changed at all, cases should fit. It also appears that any dock-connector or headphone-jack accessory that works with the iPhone 3G will work with the iPhone 3G S. On the other hand, Apple has whipped out a surprise or two in the past related to new capabilities (as well as limitations) of the dock connector port, so we can’t swear all dock-connector accessories will work. But the most likely scenario is that all existing accessories will work with the iPhone 3G S. And don’t forget that one of the cool new features of iPhone Software 3.0 is the capability for iPhone software to work directly with hardware accessories. All iPhones and iPod touches should gain this functionality through the 3.0 software, but since the hardware differs between the models, we don’t yet know if there will be hardware accessories that work with the 3G but not the 3G S.