OnAir (telecommunications)

Onair is like a magic phone for airplanes. When you are on an airplane, you normally can't make phone calls or text messages with your regular phone because you are too high up in the sky. But with Onair, you can use a special kind of phone that talks to the ground below and makes it seem like you are just using a regular phone on the ground. It's kind of like when you talk to your friend on the phone and they are far away, but it sounds like they are right next to you. Onair also lets you use the internet on your phone or computer while you are in the air. It's like being able to use your computer or tablet in the sky! Onair is really helpful for people who need to stay connected while they are traveling, like businesspeople or families going on vacation.