On the website, a full list of a user's (including their own) Following and Followers can be seen because the list is paginated. But on mobile, a full list will never be visible if a user has great than 200 Following or Followers. See mobile screenshots below as an example of a user with greater than 200 Followers, but only 200 are visible, in alphabetical order. People with first names later in the alphabet don't exist on the mobile app.
The mobile app should be fixed so that there is proper pagination of Following and Followers lists, so that all can be seen and not just the first 200 alphabetically.