The option to go to the next page is the button with the triangle:
Unlike the mobile apps, the mobile web version of the site is still supported, but Stack Exchange is in the middle of a multi-year program to switch to so-called responsive design which is supposed to look good and work goodwell on desktop, tablet and mobile phones alike. The Q&A pages have already been switched over, but e.g. the profile page has not yet. When that is done, it's expected that they will pull the plug for the mobile web version as well; the only advantage the mobile web version currently has is that it uses less bandwidth.
