How can I change the phone number associated with my account?
1. First go to account center
and login your account;
2. Then tap the gear icon on
right top to go to settings page.
3. Select "Verify Phone
No.", then type in your new phone number, click "Get code" and
then you will receive a SMS message which inform you the verification code in 6
digits format. You have to use that code on the same verification page and
verify it. The associated phone number will be updated after this verification