I have a Samsung Gravity TXT (T379) that I just installed a Sandisk 8GB microSDHC memory card. The memory card icon appears on the phone's icon bar indicating that the memory card has been detected. But when I try to take a picture I get the following error message: 'Not enough memory. Delete some items'. I have removed the phone's battery for a minute or so hoping that would correct the problem. No help. Does anyone know how to solve this problem so the microSDHC will work?