Will this case work with all iPhone 4 models?
Yes, this case is designed to work with all models of the iPhone 4.
How is the Slim Case different than a traditional protective case?
The Slim Case doubles as a traditional protective case and as a power case only when you need it. The Slim Case is Smart Battery compatible, meaning when low on power you can attach a Smart Battery (sold separately). When you no longer need additional power, remove the Smart Battery and enjoy your sleek, protective case.
What are the three gold rails on my case?
We have created the unique Third Rail™ System to seamlessly transfer power without the need for cords. When you attach a Smart Battery to your Slim Case, power is seamlessly transferred via the gold rails.
Can I charge and sync my iPhone without removing my case?
Yes! You can charge/sync your iPhone using the included micro-USB cable.