The phone on train trend is a Paris metro reel that keeps coming back on short-video feeds. It opens on a platform with someone singing straight into the camera, cuts to them holding their phone up against a train window full of passengers, then turns into a little dance in front of the posters and a full sprint past the Bir-Hakeim sign. The last shots leave the station behind: an escalator, a Paris street at night and the Eiffel Tower sparkling over the Seine.
This template puts you in that reel from one photo. You take over every metro shot, in the clothes from your photo, while the platforms, the train, the passers-by, the camera and the timing stay exactly as they were. The night views of Paris at the end are kept as they are.
The result is a 32-second vertical video, ready to post. For the best likeness, use a clear photo in good light that shows one adult from head to toe or from the knees up.