1. Step 1, turn on the setting function of the mobile phone.

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Please click to enter a picture description.

2. Step 2: Go to the settings home page, click and log in to your Apple ID.

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Please click to enter a picture description.

3. Step 3, then enter the account management page, enter the name and other information, and click the second password and security.

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Please click to enter a picture description.

4. Step 4, enter the password and account security page, and you can see a number below, which is the trusted phone number of this mobile phone. Click Edit in the upper right corner, and you will find that the bound number cannot be edited. We can only choose to add a new number.

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Please click to enter a picture description.

Step 5: After selecting Add, we enter the new number and then enter the iPhone password of this machine.

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Please click to enter a picture description.

6. Step 6: Select SMS verification, enter verification code after receiving verification SMS, and finish adding.

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Please click to enter a picture description.