Mobile phone confusion
Let's get this straight.
Mobile phones work through ground stations only. Hence all the masts and elements strapped to buildings. A phone inside the aircraft will be busting its little gut to access a cell outside.
Satellite phones are still rare beasts and work exclusivly to/from satellites in earth orbit.
The two are very different.
The signals from the former will eminate from inside the aircraft, whilst the latter will send/receive via elements on the outer skin of the aircraft.
The CAA study did produce effects on aircraft instruments but was not exhaustive.
Radio signals are strange beasties. Have you ever been on a local frequency in summer and heard stations many, many hundreds of miles distant?
Murphy is still at his work. The wrong phone in the wrong place in an aircraft will, eventually do a nasty.
Would you like to be the one to find out?