When loading a MobileFrontend page on my phone, the content is visible for a few seconds, and then the page loads and the following things happen:
- The watch star appears below the edit (pencil) icon.
- The search box changes from being empty to containing a "Search Wikipedia" placeholder.
Video of loading an MF page in portrait mode:
(Google Chrome simulating a Nexus 5 with network throttling set to regular 3G)
Note how the appearance of the watch star causes the first paragraph to reflow, pushing down the rest of the content a bit.