How to modify the reserved mobile phone number of Apple App?

Just log on to Apple's Apple ID page and enter your Apple ID account. After logging in, you can see your Apple ID personal information page, find the security column, and you can see your current bound mobile phone number. Click Edit on the right.

Step 1. Step 1: Open the Apple ID page of Apple official website/#! & amppage = Login

Step 2: In the Apple ID interface, click the password column to see your mobile phone number, and click Edit on the right to modify it;