Why can't my 4399 account phone be bound to send short messages?

Check whether the mobile phone number is entered correctly, whether the entered mobile phone number is bound to other accounts, but it seems that binding other accounts has no effect, and whether your mobile phone is in arrears, or whether your mobile phone housekeeper intercepted those short messages, because the short messages with these verification codes may also be regarded as spam, or your short messages may be deleted when they are full. If the above is not enough, you can restart your phone to clean up the cache garbage. If not, please call customer service. Also, I don't know if you are talking about the mobile phone binding of the account sold by the game store. If so, his mobile phone binding is the game store binding mobile phone number, and the website is/user/security. You can ask if you don't understand.