How do I reclaim iPhone storage space taken up by 'Other'?

none of these tips worked for me. :(

i can get rid of the extra "other stuff" but when i try to add music back, it balloons up again. (and prior to this, the playlist i am trying to sync could fit on the device with several gb of space to spare)

http://www.tipb.com/2008/08/01/iphone-restored-how-45gb-of-other-files-ate-my-storage/

Also delete zip files in

Root Directory/User/Media/ApplicationArchives

Root Directory/var/mobile/Media/ApplicationArchives

Another thing that can happen (which was what was happening to me) is that lots of space is taken up by metadata associated with your photos - organization info, small versions of the pics for browsing, etc. To get rid of this select "Sync Photos" in iTunes, and point it to a directory with no photos. This will clear out everything related to your old photos. Got rid of 11GB for me...

I had 5.5 GB of other... I simply made a backup... sorted the backup files by size, and deleted the largest (about 8 files totalling 5 GB). Then I made a restore in iTunes, when finishing the restore from the backup it reported an error that some files could not be restored, but everything else was in order, and I only had 400 MB of other! :)

I just used an iTunes card on my new iPod touch 8gb after syncing all of my music from my computer... I started downloading songs and it said that the memory was full so ignored it and later I went to my music and all of the music from my computer was gone all that is left is the music from iTunes that I got from the card... Does anyone know where my music went and how to get it back?

Ok, i have tried nearly every single way to try and get rid of this god damned "OTHER" file.
All of the suggestions concerning phonewiew going into media/itunescontrol etc etc and still can't seem to get rid of the 6/5G of other space being taken up. I have also tried to delete files from the other many different places that people suggested and still no luck. if anyway has another idea i would be very grateful. i have an iPhone 4 jailbroken.

Jailbroke iphone, download ifile, find trash and empty it, i recovered 16 gigs. the tras file had songs and movies when it siad my ipad was empty of them. proven method, just did it!!.

FINALLY! I FOUND A SOLUTION!!!

Clearing my /private/var/spool folder

After trying every single tip on this and many other websites I figured out my problem!

There were two very large 1gb+ files in the /private/var/spool folder. I believe the culprit was the airsharing iphone app. The two files had been stored in the airsharing app on my phone. I remember trying to copy the files a couple times and the copy and "open in VLC" options both failed. I believe thats when these files were created. I think /private/var/spool is some kind of clipboard.

Check /private/var/spool for files if you've tried EVERYTHING!

Just restart your iphone, ipad or ipod touch. You could also try clearing the cache, history and cookies of safari before restarting your device. After restart the space will return.

Herein lies the solution to this perplexing problem. It's a bit of a long explanation that I'd rather not do, however after seeing so many peoples endless plight with this problem I thought it was my responsibility to "expose" the solution. Please note that each iPhone "Other" database clutter problem is case-specific, so what might work for you may not be the solution for somebody else. What I found was the following: iFile is the culprit. Apparently, iFile has an option embedded in it called "Trash". When this option is turned ON, everything that is erased via iFile is put into a special "Trash" folder, hidden deep within the iPhone's folder tree. I personally do a lot of video encoding and uploading to my iPhone, usually .MKV files well over 5+GB. Photos, .AVI's, .MP4's, .MPG's, they all get routed to this Trash folder upon deletion. Fortunately, the culprit app also holds the solution. Before you go erasing anything, confirm that within iFile "Settings" (gear at bottom of screen) that Trash is turned OFF (it's ON by default). Then, starting at the very beginning of the iPhone's folder tree structure, hit the small blue button located next to each folder. There is about 15-20 of them in total. After pressing the blue circular button with arrow within it, you'll be forwarded to the folder's complete properties (similar to right-clicking on a folder icon in Windows). This will then tally up the folder's complete contents size, including all sub-folders. I found two main folders that contained over 5GB's of data in each. The ones that contain 1GB or less simply ignore as these are most likely system operating files or App functioning folders. Depending on the size of your "Other" database, you'll know what size you need to be looking for. Do this for each folder and you will soon enough find precisely where this garbled junk of data is hiding. Then, simply erase the files within each folder. I did not erase the actual folders, simply because I did not want to compromise the root integrity of the iPhone's filing structure. The whole process took about 10 minutes, and afterwards I went from having a whopping 9GB of "Other" data to a mere .94GB, almost instantly. I apologize for not being able to name the specific folder the junk files were in, but with a bit of persistence you'll have no problems finding them. Most root folders on the iPhone contain either 0 Byes or less than 50MB, so you'll have no problem locating the ones containing the bloat files. Using this method, in conjunction with erasing old data from the iTunes_Control folder, and finally erasing all Music, re-booting, then re-syncing music, you should completely eliminate all the unwanted data. As a side note, I found the folders containing Safari's cache, history, and cookies. Several suggestions have been made to erase these items, however, the amount of space they consume, in total, is indeed negligible. This is definitely NOT a final solution for those of us with over 2GB's of "Other" data within our iPhone. (I should also mention I purchased iFile, enabling many options that the free version lacks. It's only $2 I believe, and it is the most versatile, simplest, and most effective file manipulation iPhone app out currently, hands-down. Awesome app!) Good luck everyone. (Phew!)