Are you addicted to your phone?
If you take your phone with you wherever you go, it is the centre of your world and you have an addiction. It is not good etiquette to have your phone where people think that it is more important that those around you. As a manager it is your duty to set the example and leave your phone away from meetings, training sessions and ensure that all attending set their phone to aeroplane mode and put them in a bag or actually leave them in the car.