Hay là do chúng không kết nối trực tiếp với mạng viễn thông?

... you can turn off flight mode and start using transmitting services on your device. ... You must put these electronic devices away in the overhead lockers or under ... Nov 1, 2022 ... A parent or legal guardian must sign the application before you can take the test. ... A person shall not use any portable electronic device while ... Aug 31, 2015 ... That's why The National Sleep Foundation recommends turning off all devices an hour prior to bedtime. ... (If you must keep a phone nearby ... Oct 5, 2024 ... And for many of us, our screens are by our side from the moment we wake up until we nod off. Many of us treat our devices like an extension of ... Mar 9, 2017 ... Also, shortly before arriving at the border, travelers should power off ... before you can use the device again. Again, this technique can be ... ​You must pass the knowledge test before taking a drive test. Drive ... Turn off all electronic devices. Remove objects from dashboard and rearview ... Mar 21, 2025 ... CBP might retain the notes it took during the search of your device or any questioning while you were at the border. Do I have to enter a ... Oct 31, 2000 ... ... switched on the 'fasten seat belt' light. All electronic devices must be switched off and stowed as well. We thank you very much for ... Nov 1, 2013 ... You no longer have to turn off your electronic devices before takeoff on Delta and JetBlue flights. Jan 27, 2016 ... You don't have to be too worried about it, since the aircraft is able to cope with this. People are instructed to turn them off in order to ...