Is it true that the Airplane mode should remain ON for all phases of a flight?

The assertion that Airplane mode should remain ON for all phases of a flight is correct due to safety protocols and regulatory requirements. When devices are in Airplane mode, they disable all wireless communication functions, including cellular, Wi-Fi, and Bluetooth. This prevents any potential interference with the aircraft's navigation and communication systems, which can be sensitive to external signals.

In addition to safety, keeping devices in Airplane mode helps manage the aircraft's cabin environment more effectively, preventing distractions that could interfere with crew instructions and procedures during critical phases of the flight.

While some airlines may allow the use of Wi-Fi or portable electronic devices after reaching cruising altitude, the best practice is still to keep devices in Airplane mode for the entirety of the flight. This promotes compliance with aviation regulations and enhances overall flight safety.