Why does the black shark cell phone alarm clock ring when it is turned off?

The solution of black shark's mobile phone ringing: The reason why the mobile phone will ring an alarm after being turned off is because the mobile phone is actually a soft shutdown, that is, shutdown refers to the shutdown of functional software such as telephone and SMS, which still consumes batteries. After the alarm clock is set on the mobile phone, the information will be converted into digital signals and stored in the chip. When the time is up, the bell will automatically activate to form an alarm, just like when the phone is turned off, the phone time can still go on, and the time will be reset after the battery is taken out.