I am trying to free up space on my phone. In General Settings, under Usage, I note that Messages is using 186 MB of space. So, I opened Messages and noted that I have never deleted old messages! I then deleted all message threads by choosing Edit, then Delete for each one. Clean. I then powered my phone off and restarted it, hoping that would allow my changes to compute. Nope! Messages still shows 186 MB of usage! Is there a way to really delete those messages and reclaim that space? Edited to add: on my iPad2, which is also configured to receive and send Messages exactly as my iPhone is, Messages consumes 124 MB of space.