Why can't you use phones in a plane?

          why can't we use phones in a plane?

        It might be because electronics devices like cell phones and tablets emit radio signals.

these signals can interfare with flight controls.

they may also disrupt the communication with the air traffic controllers on the ground.

besides this, cellular towers are miles below the airplane.
hence cellphones try emit a stronger radio signal to detect the network.

this can increase the possibilities of causing interference with the airplane electronics equipment.

hence, portable electronics devices are told to be either turned off or to be kept on airplane mood or flight mood.

this prevents the emission of radio signals, thus helping to keep all the onboard equipment working properly.