When you activate Airplane Mode, features like mobile phone, mobile data, wi-fi and GPS gets disabled.
This is the reason why most people assume that wi-fi does not work in Airplane Mode.
There's good news!!!
When you activate Airplane Mode and when everything including wi-fi gets disabled, don't get disappointed. Turn the wi-fi alone back ON and you can use wi-fi in airports or flights and no need to worry about your network provider charging you with international roaming fee.
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