For the past month I've been getting the low storage notification on my 32 GB iPhone 5s. I have about 7 GB of photos and videos, and then for some reason apps like Yelp, Facebook and Spotify eat up 400, 600, and 800 MB of storage when I don't actually store anything in them. Another issue is that I pay 99 cents per month to back certain things up in iCloud. I do not want to use iCloud to store photos and videos however. How can this be mitigated?