The first Bluetooth development kits from Ericsson came with a lot of documentation including papers on how passenger's electronic equipment on planes affected the navigation equipment. The summary was that there was enough redundancy across the different systems that pilots could cope with any problems during level flight but stuff really needed to be turned off during takeoff and landing.
Maybe laptops (and planes) are much better than they were then, but I am amazed by the number of people who have persuaded themselves that there couldn't possibly be a problem so it is ok to ignore instructions to turn off their toys.
Maybe laptops (and planes) are much better than they were then, but I am amazed by the number of people who have persuaded themselves that there couldn't possibly be a problem so it is ok to ignore instructions to turn off their toys.