When will someone call and send text messages at the same time during the shutdown?

No, because turning off the phone will disconnect all network connections, which means that the phone has no signal, so the operator recognizes that the phone is turned off. When someone calls, because the mobile phone is turned off, all network connections cannot be connected, and SMS will not prompt at the same time. Shutdown means that the system shuts down all running programs first, and then shuts down the background services of the system. The system requests the motherboard to be turned off, and the motherboard is turned off and enabled, so that the power supply cuts off the power supply to most devices, and the computer is completely turned off.