Hello slmfish,
Thanks for using Apple Support Communities.
From your post I understand that photos you have imported into Photos on your Mac are not appearing on your iPhone. To start troubleshooting this issue, please follow the steps below.
If you’ve turned on iCloud Photo Library, every photo and video you take will live in iCloud, including ones from your My Photo Stream. If some of your devices don't have iCloud Photo Library enabled, My Photo Stream will upload your recent photos to share with those devices.
If you can't find your My Photo Stream images in the Photos app, follow these steps:
- From the Home screen, tap Settings > Wi-Fi. Make sure that Wi-Fi is on, and that you have an Internet connection.
- Go back to Settings and tap iCloud > Photos.
- Make sure that My Photo Stream is on. If it’s already on, turn it off and tap Delete. Then, turn on My Photo Stream again.
- On the device that took the photo you're looking for, close the Camera app. Nothing uploads to My Photo Stream until you do.
- See if your iOS device is below 20% battery power. If it is, My Photo Stream will be disabled temporarily to preserve battery life.
If you're using an Apple TV, it might display only your most recent photos due to its storage capacity.
Get help using My Photo Stream - Apple Support
Take care.