Just to throw in my 2 cents regarding flying and airplane mode:
Although airplane modes probably vary by phone model, each of my previous three Blackberry phones, allows the connections for Phone, WiFi (if present) and Bluetooth to be turned on or off collectively or individually. When I fly I turn them all off when the door is closed at the gate and then turn the phone off completely. Once in the air, I wait for the pilot's go-ahead for, "approved electronics use" and I turn the phone back on -- with all connections still off -- so I can listen to music, read and respond to email (to be sent once we're back on the ground), task changes, etc and anything else I can use my Blackberry for while in the 'stand-alone' or airplane mode. Once we're on the ground again, I turn the phone and all connections back on collectively. Some airlines now allow WiFi connectivity while in the air now. This is very common and completely approved by the airlines.