This worked great. Thought I was going to have to read a "how to" in order to use the program ibackup bot but your instructions and it's interface was really easy. I really appreciate it. Thank you!
Firstly you DO NOT have to do a factory reset / wipe device, it is simply not required to get the space back!!
Mine had 3GB and I just got rid of it all, here is how:
- Make a backup in iTunes
- open iBackupBot (Google it)
- Go to the relevant backup
- Click on Multimedia File Manager and click on the other Multimedia files tab
- Sort by filename by clicking the Filename tab
- Find MediaDomain/Library/SMS/Attachments and highlight all of them, then press delete. You can also click to export to a folder of your choice, if you want to save them that is.
- Then go to System Files>MediaDomain>Library>SMS>Attachments
- They will be all listed here, highlight them all and press delete
- Then just restore that backup using iTunes!
Tadaa! Space recovered, your messages are still there but without the attachments!
P.S You may want to make two backups in case you get any of the above steps wrong, but it is simple to follow the above and not do anything wrong!
I've read so so so many articles on this issue and I guess when you delete something the phone has a "cached" like memory of what was deleted. The actual deletion takes place when it is synced with iTunes. The problem we are having occurs (I'm assuming) because we restored our iPhones with our previous backups and for some reason our backup made our transferred SMS as "saved messages". Probably because it was transferred over. The glitch is that we can't delete it in "manage memory" and that it's retained as saved messages. Again, this is what I've pieces together as I've read article after article and because I work in the wireless industry I had to figure it out so I can explain it to my customers. I could be completely wrong but this is my logical unprofessional guess/explanation.
About the restore. Be sure you saved the modified changes in ibackupbot before restoring. 2 make sure you made that copy (just in case) 3. Wipe your iPhone manually from your device then plug it in and there should be no memory issue since it's a empty phone.