My Inspire is a little bit worse than the iPhone 3gs.
I just switched from the iPhone 3gs to the Inspire, and the WiFi and call signal are a little bit worse than my iPhone. The WiFi doesn't pick up signal from too far away. My iPhone would have WiFi connection almost all the way out of my driveway. The WiFi on my Inspire gets dropped right when I step out of the door. Also, I use to be able to make calls and send texts from a friends house with the iPhone, but with the Inspire, I am unable to do so. The message always comes back as and error to send the message. When I try to make a call at her house with my Inspire, nothing ever happened. My Inspire was showing the last bar of service too, so I would think that I'd be able to at least send a text. I've had the original iPhone, and the 3gs one, and they both sent texts from her house. It's not too big of a deal though, since I don't go to her house a lot, but it's weird that this new phone doesn't have as good as service.