I am not here to tell you to do something illegal. I just pointed out that bluetooth and wifi are designed to minimize interference. Whether you are allowed to use them or not lies under the responsibility of the pilot. Emirates has an in-flight wifi network on some of their fleet.

It is actually a good thing that bluetooth and wifi are designed to minimize interference. You don't imagine the number of devices using either technology that are likely to be on during flight. Many users don't know how to switch off their laptop wifi and bluetooth. Modern game consoles have wifi (yes, that kid next seat playing on his DS lite uses an active wifi device). People turn their phone off, and forget about their headset. Etc, etc...