What does airplane mode do for the iPhone, iPod or the iPad?
It shuts of all Internet. Hope this helps:)
It shuts off signal (Internet, phone, location services, etc...)
Airplane mode turns off your radio so that you cannot receive or send out texts. You also put it on airplane mode when you are on planes so your phone radio doesn't interfere with the plane's signals.
Use Airplane mode when you are on an Airplane.