This works. Attempting to rent or purchase the largest movie you can find (from the itunes store) using a device that has less free space than the size of said

This works. Attempting to rent or purchase the largest movie you can find (from the itunes store) using a device that has less free space than the size of said movie will result in the freeing up of a significant amount of space without any noticeable negative issues. I have done this many times in the past. I am currently on a jailbroken ipad Air still running 8.4, but I dont think the jailbreak, nor the ios version affect this. Also, I had success when attempting to purchase as opposed to renting the movie. I have never been charged for the movie and I always see significant free space afterward. Several of the comments on the link page mention they were charged for the movie. I was not.