I've read that one way to free up a significant amount of phone memory is go to the manage applications menu and clear caches for the apps. I went through all of my apps but only one had any cached info and it was a very small amount. I moved almost every app I could to the SD card and uninstalled a few I didn't use anymore but I'm still left with only 29.6MB of internal storage space. What could be eating all my phones internal memory? It's a D1 and it's not rooted by the way.