**For iPhone:**
1. ***Part 1:* Create a Shortcut for merging photos and use it to combine images (one time)\***
1. **Open Shortcuts**: Launch the pre-installed [Shortcuts app on your iPhone](https://www.youtube.com/watch?v=l832nnEC0as)
2. **Create New Shortcut**: Tap the + icon in the top right, then Add Action.
3. **Add Select Photos**: Search for and select the Select Photos action. In its settings, ensure Select Multiple is toggled on.
4. **Add Combine Images**: Tap + again, search for Combine Images, and add it. Choose Horizontal, Vertical, or Grid in the action's settings.
5. **Add Save to Photos**: Tap + and add the Save to Photo Album action.
6. ***Name & Add to Home Screen (Optional)****: Tap the down arrow next to the shortcut name, select Add to Home Screen, and give it a name like "Merge Photos"*
2. **Part 2: Run the Shortcut**: Tap your new shortcut (or the one from the gallery), select your photos, and it will save the merged image to your **Photos** app. Repeat this step for certificates with both front and back images.