How do I download square dance videos to my memory card from my cell phone without a computer?

For now, you have to have a cell phone with an external memory card, which few people use anymore.

When you insert the memory card into your phone, open the settings, select storage, and change the storage location to the memory card.

Then download the square dance video, and then there must be a card reader, will download the video of the phone memory card out, into the card reader can be checked on the stereo.

The above things are missing.