Android Question Sending power

[newbie]

Hi,
know someone if there a possibility to disconnect all sending-power,
so that really nothing sending-power was emitted ?
I want to use android devices over usb as HMI-Display like Nextion.

thanks

 

[ggg]

Hi,
know someone if there a possibility to disconnect all sending-power,
so that really nothing sending-power was emitted ?
I want to use android devices over usb as HMI-Display like Nextion.

thanks

Would "airplane mode" do that for you?

 

[newbie]

Would "airplane mode" do that for you?

Thanks, that is what i quested