8. Delete those unused games
There are few gaming apps that can take up more than 1 GB of space because of 3-D graphics. For instance, Oregon Trail uses 1.2 GB. If you have some old games hidden on your phone that you’ve either finished or don’t play any more such as Angry Birds, 2048 or Candy Crush then just go ahead and delete them. You can do that within Manage Storage by tapping on the app.
You can always redownload them from iTunesif you ever want to play them again, but don’t expect your highest scores to still be there.