Change to a T-Mobile phone card after going abroad. After a period of time, you need to use China to verify the short message. Change it.

You can press the manual button, but generally in America, the robot will talk to you again. You can say mayispeaktoaperson? Or ask American friends for help. Again, this is a friendly reminder. In America, you have to go to a physical store to change your mobile phone number. It seems that you can't change the number by phone alone. I hope it helps you.