i just recently purchased a Galaxy Tab online and havent received it in the mail yet but have a ? about the memory of the device...i ordered the device thinking it has 2 GB internal memory with a 16GB microsd preinstalled...now i am seeing other places online stateing that the device has 16GB versions along with 32GB versions,plus has the option for the microsd just not preinstalled...this is the sprint version i bought...can anyone clear this up for me..thanks..