pilotwolf - I wouldn't make assumptions about everything being specially approved (although exactly how an Aviation GPS is not approved for use on aircraft is still puzzline me).
For WiFi, which is a
transmitting system, there is no 'approval'. Passengers can use whatever WiFi kit they bring on board.
You are in denial.
Passenger use of this transmitting equipment is real, it's approved, it's being marketed, and it's being used every day.
Boeing Explains