Use cases
What people film with two cameras
Every one of these used to need a second camera or a second take. With both iPhone cameras rolling at once, each becomes one recording. Pick yours for the setup that fits it: which mode, which layout, and what the take should save.
You and where you are
Front + Back, the window in a corner, Both saved. The place and your face in one file, and the clean files for a longer cut.
The hands and the whole setup
Wide + Ultra-wide in an over / under split: the detail and the context, live, in one video, with a script if you need one.
Two people, one phone
The phone between you, Front + Back, side by side. Both faces the whole time, and a clean file per person for the edit.
The thing and your face
Over / under for vertical, the scene on top, you below. Drag the seam, save Both, post now, edit later.
The detail and the place
Wide + Ultra-wide on the move: what a place is like and how big it is, from one pass, with room to crop for every feed.
Three decisions, every time
Mode. Front + Back when you belong in the picture; Wide + Ultra-wide when the scene deserves two focal lengths; Single when one picture at full quality is the job. Layout. The window keeps one camera large and the other as a reference; a split gives both equal weight; the seam and the window are yours to move. What to save. Combined to post now, Separate to edit elsewhere, Both to do either later. The pages above make those three choices for each kind of video.