I was just syncing my iPhone and then the Other went up to 8.3 GB. I tried restoring it and it was fine for a second and then went straight back up to it. What is the best way to reduce it? I don't have much room left on my phone. :/
Best way is to restore as new and not put a backup on. Otherwise deleting some things like Messages and/or Music data might help. Using some software like PhoneClean might also help some.