Apple 1 1 How and where to set the selfie mirror?

For the selfie mirror setting of Apple 1 1 mobile phone, first open the camera page, then press the switch lens button at the lower right of Figure 1 and the time system above, and you can find the time system shown in Figure 2, including 3 seconds and 10 seconds, and finally press the button below to shoot. Please refer to the figure below for details:

Figure 1

Figure 2