A crew member helps a passenger connect his mobile phone to the inflight wifi on board the flight CZ6365 of China Southern Airlines, Jan. 20, 2018. More Chinese airlines have begun to allow mobile phone use on their aircraft or announced plans to lift a ban. Passengers on board the aircraft can use portable electronic devices (PED), such as smartphones and tablets, but phones still have to be switched to airplane mode. (Xinhua/Chu Hongyu)