To import iPhone pictures to Photos on macOS, follow the steps below:
1. Launch Photos app on macOS and connect your iPhone to MacBook, iMac, etc. via USB cable.
2. Tap 'Trust this Computer' on your iPhone when you receive a message.
3. Select photo items you wanna import to Photos for Mac. Or just choose 'Import All New Items'.
4. Pull your iPhone out of your Mac after the whole process is done.

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Note: if this is the first time for you to connect iPhone to Mac Photos app, please don't undo 'Open Photos for this device' option at the top menu. If you accidently undo this option, please disconnect your iPhone to Mac, shut down and reboot your iPhone. Then re-connect iPhone to Mac Photos app to import pictures again.

To export pictures from Photos app to Mac, do as following:
1. Choose the pictures you plan to export to macOS.
2. Click 'File' on the top toolbar of your MacBook/iMac > Tap 'Export' > Tick 'Export XX Photos'.
3. Select export image format (JPEG, TIFF, PNG), Info and File Naming > Click 'Export' button.
4. Open 'Finder' on MacBook, Mac Mini, iMac desktop to search and find the pictures you export.

How to get updates for macOS Mojave or later

Photos For Macos Catalina

If you've upgraded to macOS Mojave or later, follow these steps to keep it up to date:

1. Choose System Preferences from the Apple menu , then click Software Update to check for updates.
   
2. If any updates are available, click the Update Now button to install them. Or click ”More info” to see details about each update and select specific updates to install.
   
3. When Software Update says that your Mac is up to date, the installed version of macOS and all of its apps are also up to date. That includes Safari, iTunes, Books, Messages, Mail, Calendar, Photos, and FaceTime.

To find updates for iMovie, Garageband, Pages, Numbers, Keynote, and other apps that were downloaded separately from the App Store, open the App Store on your Mac, then click the Updates tab.

To automatically install macOS updates in the future, including apps that were downloaded separately from the App Store, select ”Automatically keep my Mac up to date.” Your Mac will notify you when updates require it to restart, so you can always choose to install those later.

How to get updates for earlier macOS versions

If you're using an earlier macOS, such as macOS High Sierra, Sierra, El Capitan, or earlier,* follow these steps to keep it up to date:

1. Open the App Store app on your Mac.
2. Click Updates in the App Store toolbar.
3. Use the Update buttons to download and install any updates listed.
4. When the App Store shows no more updates, the installed version of macOS and all of its apps are up to date. That includes Safari, iTunes, iBooks, Messages, Mail, Calendar, Photos, and FaceTime. Later versions may be available by upgrading your macOS.

To automatically download updates in the future, choose Apple menu  > System Preferences, click App Store, then select ”Download newly available updates in the background.” Your Mac will notify you when updates are ready to install.

* If you're using OS X Lion or Snow Leopard, get OS X updates by choosing Apple menu  > Software Update.

Photos For Macos Mojave

How to get updates for iOS

Learn how to update your iPhone, iPad, or iPod touch to the latest version of iOS.

Learn more

• Learn how to upgrade to the latest version of macOS.
• Find out which macOS your Mac is using.
• You can redownload apps that you previously downloaded from the App Store.
• Your Mac doesn't automatically download large updates when it's using a Personal Hotspot.