If the device can be operated entirely without “holding” it then it would not be covered by the legislation. So your example, pixie, would probably not fall foul of the law. However, wedging it between the shoulder and ear would certainly be seen as “holding” the device.
“Does the same rule of law cover holding & consuming a banana,any other fruit,a jam doughnut or drinking a cup of coffee whilst driving ? “
The same law does not apply, ron, as it only applies to phones and other communication devices. However, other general laws such as failure to exercise proper control or even careless driving may be applicable.