The first thing to do is turn on airplane mode before takeoff, but don't forget that Wi-Fi may be available on board, so check if the airline offers this service. If you plan to watch movies, download them to your device ahead of time, as streaming may not work or may consume a lot of charge. Gaming is also a great option for entertainment! By the way, here's an interesting article https://www.unfinishedman.com/can-you-play-games-on-your-phone-while-flying/. I would also advise you to disable unnecessary background apps that consume charge and reduce screen brightness if possible. Don't forget to bring a paverbank or, if the airplane has USB sockets, a charging cable. Another useful lifehack is to turn on Do Not Disturb mode to avoid constant vibrations from notifications when you're connected to Wi-Fi. And if you are concerned about dry air in the cabin, try using the “Dark Mode” function - this way the screen will be less bright and will not tire your eyes

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