How do social networking mobile applications communicate with the server?

Question

Mobile development

How do social media mobile apps work? How is the authorization process going? The user entered a username and password, and then what? Is there an access key issued? Why, after changing the password, the application asks to go through authorization wherever the user logged in earlier, if just a key was previously issued?

Answer 1

A token is issued, which is either generated based on the password, or simply becomes obsolete with a password change (social networks are different, the algorithms may be different)
Read the social network API documentation. They have it all planned out, for example https://developers.facebook.com/docs/facebook-logi...