It only took me 3 days to run out of room on my new galaxy s3. I know some of what is on there is garbage from trying to sync with my imac. I now have an sd card that does show up so I know it's formatted correctly etc. but I can't download any apps because there is no room on my phone. I went into the file manager and did what I could there, but there must be a lot of files that don't show up there. ATT's tech support couldn't help me. I can't believe I'm the only one who want to do this. Shouldn't all the songs, contacts etc. be on the sd card so that there is room on the phone for apps? I'd appreciate any help.