Previous purchases may not be restored if they are no longer on the iTunes Store, App Store, or Apple Books.

Backup of purchased music is not available in all countries or regions.

Some iCloud+ features are not available in all countries or regions.

Thank you for using Apple Support Communities. If you turn on Download Originals, iCloud Photo Library keeps your original, full-resolution photos and videos in iCloud and on your device. You can use Optimize Storage on your iPhone, iPad, iPod touch, and Mac. You can download the original photos and videos over Wi-Fi or cellular when you need them. Your library is optimized only when you need space, starting with the photos and videos you access least.

Your original photos and videos are stored in iCloud and space-saving versions are kept on your device. If you turn on Optimize Storage, iCloud Photo Library automatically manages the size of your library on your device. Go to the iCloud tab and choose a storage setting.Open the Photos app and click Photos in the menu bar.If you’re using iOS 10.2 or earlier, tap Settings > iCloud. You can save space on your device when you turn on Optimize Storage. ICloud Photo Library keeps all of your photos and videos in their original, high-resolution version. Learn more about plans and prices in your region. If you choose 200GB or 2TB plans, you can share your storage with family. Plans start at 50GB for $0.99 (USD) a month. If you need more space, you can buy more iCloud storage. When you sign up for iCloud, you automatically get 5GB of free storage. And as long as you have enough space in iCloud and on your device, you can store as many photos and videos as you like. The photos and videos that you keep in iCloud Photo Library use your iCloud storage and your device storage. This link will give the details: iCloud Photo Library If you have iCloud Photo Library set for 'Optimization', the originals are kept in the iCloud and your iPhone would have to download them.

Here's a link to check the storage on your iPhone: How to check the storage on your iPhone, iPad, and iPod touch Also, make sure that you're using a stable data connection and to restart your iPhone if you haven't done so already. You might want to check the storage space on your iPhone. It's my understanding that you're unable to make a video because it's still saying downloading from iCloud.

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