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When you don’t put your phone on airplane mode during a flight, it continues to emit electromagnetic signals in search of a network. So what, you ask? It can interfere with the aircraft’s communication and navigation systems. “While modern aircraft are designed to minimise such risks, the constant signal-seeking behaviour of multiple devices can create cumulative electromagnetic interference,” said Rajagopal, aviation expert at Aviation Training India.
Additionally, this continuous search for a connection drains your phone’s battery and may overload ground-based cell towers as your “device rapidly switches between them due to the plane’s high speed and altitude.”
While the chances of a phone causing a critical issue during a flight are minimal, interference from multiple devices can disrupt sensitive equipment or communications between the cockpit and ground control. “Putting your phone in airplane mode is a simple yet significant step to ensure the safety of everyone onboard. It is important especially during landing and take off,” said Rajagopal, adding that the “radio altimeter operates at 4 Giga Hertz range which is close to 5G signals of mobiles”.
The electromagnetic radiation emitted by phones may not directly harm passengers but prolonged exposure to electronic devices can increase stress levels, disrupt sleep patterns, and strain vision due to blue light, experts urge. “More critically, not adhering to safety protocols can contribute to heightened anxiety among passengers and crew,” said Dr Maneendra, consultant and HOD critical care department, Gleneagles Hospitals, Lakdi Ka Pul, Hyderabad.
Doctors recommend using this time to disconnect, relax, or engage in light reading or meditation, which can lower stress and improve mental well-being. Following airline regulations not only ensures safety but also provides an opportunity to prioritise health during travel.
DISCLAIMER: This article is based on information from the public domain and/or the experts we spoke to. Always consult your health practitioner before starting any routine.