My "other" data became huge after 8.3 update, apple says to restore to new to fix, I don't want to wipe out all my info. They said a backup will just put it back. I have 37gb of other now
me neither, the "other" size doubled from 3GB to 6GB since updated to 8.3
and the free space size says 5GB, and the truth is i only have 1,5GB free space on my iPhone 😕
Did you update to iOS 8.3 through OTA?
Maybe these are update installation files, which weren't erased and now stuck on iPhone. You may try these simple methods to get rid of "Other" data from your iOS device.