To optimize the storage of your photos, iCloud Photo Library must be enabled. If you're unsure how to activate iCloud Photo Library, follow the guide How to enable iCloud Photo Library feature in iOS 8 on iPhone,iPad. After successfully activating it, follow these steps to free up additional storage space in iCloud Photo Library on iPhone, iPad running iOS 8.
Step 1 : Go to the Settings of your iOS 8 device or higher.
Step 2 : Tap on iCloud.
Step 3 : Then select the Photos option.
Step 4: Press Optimize iPhone Storage to begin optimizing iCloud Photo Library storage.
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As mentioned above, we've guided you to free up additional storage space for iCloud Photo Library on iPhone, iPad running iOS 8. If you frequently store your photos and videos, this is something you should do to free up more space for your iPhone, iPad.
