One of the major benefits of iOS 8.1 is iCloud Photo Library. All your photos can now live in the cloud rather than being tied to a particular device, making them available to you regardless of which device you're using. Any change you make to a photo or video on one device is carried over to the others. And perhaps the most important benefit is that it allows you to free up space on your devices. If you enable iCloud Photo Library, you can choose to store only optimized versions of your photos and videos on your iPhone or iPad. The full-resolution versions are kept in the cloud, and versions less memory-intensive, which are perfectly suited to the size and resolution of your iPhone or iPad, are stored on your device. This can save you gigabytes of storage space. And any time you want, you can download the full resolution.