iPhone users can create photo collages natively using the Apple Shortcuts "Photo Grid" tool, which stitches images into a simple layout. Alternatively, Google Photos offers an intuitive "Collage" tool for creating grids with layout options, while third-party apps like Layout from Instagram provide more aesthetic control, including borders and varied, creative layouts. For detailed, step-by-step instructions, refer to the MakeUseOf guide on crafting photo collages.