As many have noted 'Messages' seem to take up a lot of space on some peoples device's. Messages for me (under usage) take up 3.0GB. As many have suggested, I attempted to delete many of my message conversations as I have hundreds of message conversations dating all the way back to 2008 from when I first purchased an iPhone. The problem is that I can delete all I want but once I exit the app and attempt to relaunch the app I get a blank messages screen (even though I NEVER cleared all of the messages) - from here I cannot send any messages or see any. I then restart my device - launch the messages app and find every single message conversation still there that I once 'deleted'. I suppose this is a bug in the iOS7. Has anyone else had a similar problem? It is very strange - but I would love a fix or a way to delete at least half of my messages.