Verified answer

I have a USB 2.0 card reader. I have just check to see which cards it can be used with. I can use it to read SD/MMC cards as well as MS, CF and X-memory. I just put the card in the correct slot and plug the reader into a USB port. The card is view by the computer's operating system as a disk. I use mine to transfer files and updates for my SatNav.

3 possibilities:

You either connect your phone to your computer trough a usb cable and use the software that is given with the phone to transfer files (example: samsung has some really nice software for that).

If you don't have software, but your computer has an sd slot build-in, just put the card in there and your computer will recognize it as an drive.

If you have a laptop or desktop that has bluetooth, try adding your phone as hardware on your computer trough bluetooth. You will be able to transfer files.

RTFM.

Read the phone User Manual, cover to cover!!!

Still stuck?

Read the FAQs and Forums on the phone manufacturer's website.

what kind of phone do you have

i don,t know