If you’ve ever opened the Photos app on your iPhone 18 Pro or iPhone 18 Pro Max and seen the message “Optimizing Library,” only to realize it’s stuck and never seems to finish, you’re not alone. I was experiencing this issue on my iPhone 18 Pro also. Mine seemed to be stuck for days. Like me, many iPhone 18 Pro and iPhone 18 Pro Max users report that their photo library gets stuck during the optimization process, often halting at specific percentages like 1%, 60%, or 30%, even when all their photos appear to be fully synced with iCloud. This issue is frustrating, especially when the device repeatedly prompts you “to finish optimizing your library, connect to power overnight until complete”, yet the progress never seems to move forward.
The “Optimizing Library” feature is designed to help you save space by storing full-resolution photos in iCloud while keeping smaller, optimized versions on your device. However, when the optimization process gets stuck, it can create unnecessary concerns about whether your photos are safe and properly backed up. The issue could stem from various factors, such as low device storage, connectivity problems, or even software bugs in iOS.
In this article, I’ll explain the common reasons why your iPhone 18 Pro might be getting stuck on “Optimizing Library” and guide you through several troubleshooting steps to fix the problem, so you can regain control over your photo library and ensure everything is running smoothly again.
There are several key steps you can take to resolve the issue. Here are some essential things to check and do:
- Make Sure Your iPhone is on the Charger
- Ensure You’re Connected to Wi-Fi
- A stable Wi-Fi connection is crucial for syncing and optimizing photos with iCloud. Cellular data may not be fast or stable enough for this process, especially if you’re uploading or downloading large photo libraries. Double-check that your iPhone is connected to a reliable Wi-Fi network. If you’ve recently switched networks or have a weak signal, reconnecting or moving closer to the router can help.
- Restart Your iPhone
- Sometimes, a simple restart can resolve issues like a stuck optimization process. Restarting your iPhone refreshes the system and clears any temporary glitches that might be hindering progress. Press and hold either volume button and the side button until the power-off slider appears. Drag the slider, then wait 30 seconds for your device to turn off. To turn your device back on, press and hold the side button (on the right side of your iPhone) until you see the Apple logo.
- iCloud Storage
- Make sure you have enough available space in iCloud for all your photos. Even if your photos appear synced, the iPhone might still be trying to upload higher-quality versions or manage storage. Go to Settings, then tap your name. Tap iCloud. You see how much space you have left in iCloud and if you need to upgrade your storage plan. You can easily upgrade if needed.
- iPhone Storage
- Sometimes, if your device storage is very low, it can interfere with the optimization process. Go to Settings > General > iPhone Storage to see how much free space you have.
- Check the Sync Status, and Try Sync Immediately
- Open the Photos app and tap Collections. In the top-right corner of the screen you can see a preview of your syncing status; a yellow badge means iCloud syncing is paused. Tap your account icon to see the details.
- To prioritize syncing, tap your iCloud account profile at the top of the screen, tap Sync Immediately, then tap For Today. It turns off automatically after one day. Apple notes that it may affect battery and cellular usage, and that it pauses if Low Power Mode or Low Data Mode is turned on.
- Turn Off and On iCloud Photos
- Check the sync status in step 6 before doing this. Go to Settings > [your name] > iCloud > Photos and turn off Sync this iPhone. Wait for a few minutes, then turn it back on. If this does not work, turn off Sync this iPhone, restart your iPhone and then turn it back on.
