my understanding is it's recommended to put phones on airplane mode during flights, so phones don't transmit radio signals that can interfere with the aircraft's systems, but technology has significantly improved and it's unlikely anything will happen if you don't put it on airplane mode.
do you put your phone on airplane mode during a flight? why? for plane reasons or for personal reasons (e.g. saves battery by preventing your phone from looking for a network)?
do you put your phone on airplane mode during a flight? why? for plane reasons or for personal reasons (e.g. saves battery by preventing your phone from looking for a network)?