Editing videos on an iPhone with iMovie is easy with the simple steps provided in this instructional video. To begin, select either "Movie" or "Trailer" when opening the app. The trailer option offers pre-made templates that can be customized with personal images. For the movie option, select images to create the sequence and click "Create Movie". Transitions can be added by selecting the "transition" symbol and choosing from the options provided.

To adjust the timing of images, tap on the image and slide the bar at the beginning and end of the shot. Editing audio is also possible by adding soundtracks or recording voiceovers. To balance the levels of audio, select the audio clip and use the "split" and "delete" options to adjust the volume. Finalized videos can be saved and sent to various devices. With iMovie, editing videos on an iPhone is made easy and accessible.