Obtaining Additional Online Storage Space

Every iCloud account comes with 5GB of online storage space, plus all the additional storage space needed to store iTunes Store, App Store, iBookstore, and Newsstand purchases.

If, however, you use iCloud to back up your iPhone; maintain a Photo Stream with 1,000 digital images; and also use it to store, transfer, and synchronize documents, data, and files, that 5GB of online storage could easily get used up. Even more space is needed if you own both an iPhone and an iPad or iPod touch, and also use iCloud with these other devices.