How mobile phones CAN interfere with plane navigation systems on some jets even in 'flight mode' | WHAT REALLY HAPPENED

How mobile phones CAN interfere with plane navigation systems on some jets even in 'flight mode'

Mobile phones still pose a real risk to the safety of planes even when in the supposedly flight-safe 'airplane mode'.

The feature found on most handsets disables all external signals from a phone but the device can still use WiFi, which interferes with some faulty screens still in use.

A vulnerability was discovered in 2014 that caused cockpit screens in Boeing 737 Next Generation and 777 airliners to suffer with interference from WiFi signals.

In 2014 the US Government promptly issued a deadline for all operators to replace or fix the fault by November 2019, but some are still believed to still be in use.

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