Realizing Apple would never allow such an app in their store, I was looking to write a barebones app that simply displays the signal strength for the GSM radio. Not really concerned about WiFi signal strength, but I guess it could be in the app too while I'm at it.

Question is this: I've been able to find some information on reporting WiFi signal strength, but not for the GSM radio. Does anyone know where I might be able to find a quick example of using this portion of the API?