What are the difference between the SD cards or the MMC's, and what's better to get? Also does anyone here use a 1gb or 512mb mmc in the N3650? Is there slowdown, and if so, how bad is it?

Only MMC for the Nokia phones. SD cards are thicker (won't fit) and extra pins for additional functionality. A device that supports SD can also handle MMC, but a device that supports MMC cannot handle SD.

If you're interested in details, then see http://www.mmca.org/ and http://www.sdcard.org/

thanks for the help mate, now i just need to know how the Nokia manages with a mmc thats 512mb.

Hi, i need help on installing applications using MMC. i have a 3660 phone and a MMC reader/writer. I have already saved the applications in my MMC and switched it back to my phone. However, I cant find the file using the "manager" in "tools" menu. Is there a special folder where i have to save it? Thanks in advance! :)