If it does not belong anywhere else and has to do with Android post it here.
It's possible that the app requests internet acces and you have allowed the networks to be turned on automatically.
Just check your Wi-Fi Advanced settings and look for "Turn Wi-Fi on automatically" and "switch to mobile data". These two settings can cause the behavior you described.
Just check your Wi-Fi Advanced settings and look for "Turn Wi-Fi on automatically" and "switch to mobile data". These two settings can cause the behavior you described.
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