After the Flight crew have made their announcement on the ground.

Ladies and gentlemen, we are about to interrupt the Highlife Entertainment to brief you on the safety procedures of this aircraft. We ask that you remove your personal headphones until the end of the video. All hand held devices, including mobile phones, must now be inflight safe’ mode or switched off and held securely or placed into a pocket. Larger devices, including laptops, must be switched off and stowed away safely. During the flight, all electronic devices must be disconnected from the seat power, when not in use.
As a reminder smoking is not permitted at any time whilst on board. If you have any questions, please ask a member of your cabin crew.