if not mistaken I think they are still anti phone on CZ. My wife and I each have tablets and we used them from gate to gate with no issues or questions during take off or landing. There is no wifi on the plane. so use of a phone long term on that kind of flight, minus music, is likely not too important. Again I thought their IFE selection in English was good - I had downloaded a bunch of movies and TV Shows to our tablets as a backup but we did not use it once. In comparison, we flew Air Tahiti home - very poor English entertainment options. That was a late night flight so we slept into JFK.