I’m not talking about playing games or watching stuff on flight mode, I’m talking about making calls and texting or using mobile data.
As a kid my parents told me that it interfered with the pilot and they couldn’t see but I realised that’s the same reason they don’t like the overhead light in the car.
In: Technology
One of the reasons is that when not in flight mode, phones will continuously be searching for both signal and WiFi connections. For old and/or unstable phone batteries, this power consuming activity may cause the battery to catch fire. In an airplane cabin, this would be dramatic and a real threat to safety. So it is mainly a precaution against fire, and much less an issue of signal interference etc.
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