Most people, though, have become used to setting their phones to airplane mode.
In China, though, things are a little different. As China.org reports, three different passengers on flights between January 5 and February 6 were arrested for using their phones on planes.
A woman named Zhang allegedly refused to turn off her phone during take-off and actually made calls during a flight. She was held in jail for five days.
A second passenger named Niu was also detained for a cell phone offense but got only three days.
The final passenger, whose last name is Wang, was perhaps the most unfortunate. This passenger -- whose sex wasn't revealed -- allegedly listened to music during take-off and landing. Wang also got five days, the maximum for a cell phone offense. Fines can also be imposed up to 50,000 yuan (around $7,265).
Chinese authorities insist that all phones must be switched off during flights. They aren't convinced that airplane mode blocks all signals. Oddly, though, tablets don't fall under the same strictures as phones.