Important notes:
During phone calls iPhone stops running the user applications, therefore iSpeedCam cannot protect you. After you finish an incoming call iSpeedCam restarts and you are protected again.
Note, that iSpeedCam is based on your iPhone’s Location Services feature, and it is influenced by its accuracy. Lack of cellular network coverage, Wi-Fi (WLAN) or GPS signals in a certain area may cause incorrect position/speed reports on your iPhone, even more your iSpeedCam may not warn you about possible cameras or display your speed / position incorrectly.
You can always verify your current signal's strength on the Statistics view. If you have problems, make sure that the Location Services feature is enabled in the Settings application.
Note: Continued use of device's GPS running in the background can dramatically decrease battery life. Certain features of the application make frequent use of the device's internet connection.