Turn Off Your iPhone 3G Wi-Fi Connections For Safety

As most owners of Apple's popular iPhone 3G know, it contains built-in Wi-Fi networking similar to that of a laptop computer. Some iPhone 3G owners don't realize, however, that their phone will automatically connect to certain wireless access points without their knowledge. The only robust way to prevent these unexpected connections is to turn off Wi-Fi on the iPhone 3G when not using it. More - Turn Off Your iPhone 3G Wi-Fi Connections For Safety

See also - Avoid Automatically Connecting to Open Wi-Fi Networks in Windows