To save a single photo/video
- Tap on the photo/video to open it.
- Tap on the three dots in the upper right corner, and tap “Save to Camera Roll.”
To save multiple photos
- Long tap on a photo/video to launch the selector.
- Select all photos/videos to download by tapping on each one.
- Tap on the download icon along the top of the screen.
To save all photos/videos in a circle
- Tap on the Circle to open it, and then tap on the ⓘ icon in the upper right corner.
- Tap “Save all to Photo Library.”
- You will be asked if you want to “Save All Media” or “Save Media By Others.” The latter option will not download photos you added to the circle, helping you to avoid duplicates on your device.
For information on default download locations, refer to these FAQs for iOS and Android.