Why do you have to enter your mobile phone number after logging in to Twitter?

The reasons for entering the mobile phone number after logging in to Twitter mailbox are as follows:

1. According to the national requirements for registration in real-name registration system, verifying the mobile phone number of an APP customer is equivalent to verifying that he is himself.

2. For the demand of the APP itself, the notice of some follow-up matters confirms that the marketing of some commercial activities can use more direct telephone contact.