Mobile phone stuff
Seceral years ago Emirates added mobile phones off to the before start cx as there was an incident where a Pilot had the fire warning bell as a ring tone.. So you can guess what happened. That caused the item to be inserted ... Problem solved .. Well not really.... Because as they also operate B777s one would think it would also be added to that checklist if considered important enough... However as it is an ECL that was too hard ( operators can mod the airbus cx as they are just paper),
so not entirely surprised this occurred however it could have just been ignored by the pilots.. As happens in a large number of flights every day most likely out there in pilot land when the left on fones come in range of the towers...
Wja