Airplane mode

- In this chapter we're going to look at…some of the important settings and preferences…that we either didn't cover in earlier chapters…or that we didn't look at very closely earlier.…Let's tap the settings.…The first item in settings on IOS devices…is airplane mode.…Airplane mode simply turns off your devices…cellular, WiFi, and Bluetooth radios.…Notice how the WiFi and Bluetooth settings now say off…and cellular and personal hotspot are grayed out…If I scroll down a little…you'll see the phone setting has faded back…and it also says airplane mode.…The other indicator that I'm in airplane mode…is the little airplane icon…in the upper left-hand corner…which stays there as long as you're in airplane mode.…

So airplane mode means that your device…is not transmitting or receiving data of any kind…and can't connect to the internet or receive calls.…This is useful not only if you believe…that cellphone signals interfere…with airplane communications or other functions…but also if you want to save battery power…on a long cross-country plane ride.…