I'm new to the Samsung Captivate but have studied what I can find online and elsewhere. I want to add 16 GB of memory, and an AT&T store, which only sells up to 8 GB, says Micro SD is the correct card. Elsewhere I find that all cards manufactured today above 8 GB are SDHC, and above 32 GB are SDXC. I also found that SD cards are formatted FAT16 and SDHC are formatted FAT32. Does this mean I can't use the Micro SDHC 16 GB card? Or can I use it and reformat it to FAT16? BTW, I looked for a system update this morning and lo and behold received version 2.1 Upgrade 1, which after installation, fixed several problems I had encountered.