I have a 32gb iPhone with a 10.2gb iCloud backup and 7gb of free space, and a 64gb ipad with a 6.7 gb iCloud backup and 24gb of free space. Why is there this discrepancy? What's taking up space on my device that's not in the backup? Does this mean if I buy a new device it only has to have more memory than an iCloud backup in order to restore from that backup? Or does a restore from icloud somehow take up more space on the device than the size of the backup?