Thought I'd share this little trick if you require to free up some space on your iOS device.

Step 1: Tap the Settings app and then tap General > About to see how much storage is available. Note that as the "before" number.

Step 2: Open the iTunes Store app, head to movies, and find any really large title. "The Lord of the Rings: The Two Towers" is a good choice at 6.83GB. (You just need to find a movie that requires more space to download than you have available on your phone.) Tap the Rent button twice, keeping in mind you won't actually end up renting it (and therefore won't be charged anything).

Step 3: Once you see the message that there's not enough space available to download your rental, tap Settings. Then navigate back to General > About and you should see a couple hundred megabytes' worth of additional available storage -- possibly even more.

Step 4: Repeat the process! (That is, go back to the iTunes Store app and try renting the movie again.) Each time, you should wind up with another chunk of freed-up storage. Keep going until you either have too much free space (meaning you'd actually be able to download the movie) or the available space stops rising.

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