On March 11, the topic "How high is the cost for people to change their mobile phone number?" aroused a lot of attention on Weibo. To answer this question, the first thing we need to know is what it takes to change a mobile phone number.

First of all, the first and most important step is to change the mobile phone number once bound to each bank. Fortunately, now you can use mobile phone banking without going to the business hall of the bank. Secondly, it is to change the phone number information of each App, which is a troublesome step, because everyone is bound to at least 10 apps.

Finally, it takes a lot of time to notify each friend of the changed mobile phone number. No wonder some netizens make fun of it.The cost of changing a mobile phone number is too high at present.

Industry insiders point out that with the hot competition of mobile Internet, in order to lower the consumption threshold, many platforms are constantly simplifying the user login and consumption threshold. Using mobile phone number as login account, using mobile phone dynamic verification code as login password, has become a typical phenomenon.

But the challenge for consumers is how to prove "I am I" in case they change their ID and forget to change their platform login information.

Generally speaking, when the mobile phone number is lost or logged off, it is recommended that the user bind the password mailbox and set the login password, so as to avoid the situation that the mobile phone number cannot be logged in. When the loss or cancellation of the mobile phone number has occurred, such as the user does not bind the mailbox and forget the login password (or do not set), the user can consider registering a new account.