A mobile device has at least two camera lenses for taking a first image and a second image as a stereo-image pair. The mobile device also has an electronic processor for composing a composite image from first image strips compressed from the first image and second image strips compressed from the second image in an interlaced manner. The composite image is conveyed to a display panel so that a viewer can see a 3D image through a parallax separating sheet with parallax separating units. The composite image can also be electronically shifted by haft an image strip to accommodate a viewer with a dominant eye. The shifting can be initiated by a viewer using a switch on the mobile device.