How much is it to tie the top of Tianlong Babu with a mobile phone?

1 I think it's expensive to send text messages every time if you tie it to it. The first time you bind a mobile phone, you have to deduct game points. Sohu One Card needs 100 points. In the future, Sohu will not charge for search, but it will generate communication fees. Mobile or Unicom charges for a short message 1 min. 2. It seems that it is only safe to tie the top of the mobile phone, right? The security of these bindings is only relative. As long as others know your details, they can also log in to official website to unbind, which means that the binding of the mobile phone is the same as that of the secret information card. You can log in directly, enter the mobile phone binding function area, and unbind the mobile phone.