Can Apple still receive text messages when it closes the secondary card?

Apple can't receive SMS when the secondary card is closed. There is a small piece of hardware on the user interface of iPhone. The round button at the bottom of the screen is called the Home button, and there are five extra buttons. The Home button is mainly used to close the application in use, navigate to the main screen interface, or wake up the phone.

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The IPhone also has five extra buttons, namely the switch button, which is located at the top of the phone. As a power button, it can also be used as a control to control incoming calls. When receiving an incoming call, press the switch button once to make the incoming call ring disappear, press it twice to transfer the incoming call to the language mailbox, long press will display the power-off option, and long press will turn it on after power-off.

Located on the left side of the fuselage are mute and volume control keys. The iPhone4 has two round buttons to increase or decrease the volume. The mute button can quickly mute ringtones, prompts, push notifications, camera shutters, etc. This button does not stop the alarm application. In some countries or regions, it will not turn off the camera shutter sound, voice memo sound and other sound effects.