I posted about this already back when I first got my Esteem. But now the problem is back w/ a new card. I bought an SD card (from eBay) (16gb, up from 4gb), I put the SD card in, but it does nothing. I go to phone and SD Storage, and the "unmount" option is grayed out, along side "format". The way I fixed the problem when it first happened was by putting the old SD card in, then choosing "unmount" then taking out the battery a litttle (enough to pull the SD card out, while still keeping my phone on), I inserted the new SD card, and clicked out "mount", that worked, and I was then able to format. I try it again this time, but it won't work :/ it reads the 4gb but not the new 16gb. What to do?!