I'm looking for a small device that accepts a microSD card and lets me transfer photos from my phone to the card over Wi-Fi. I'd like to use it as simple external backup storage without plugging the card directly into my phone. Is there a specific product category or search term for this, or does a practical solution require using a router, computer, or small single-board computer?
1 Answer
Some travel routers and older wireless storage devices support file sharing over Wi-Fi. You may also find products described as wireless portable storage or wireless SD card readers, although they’re less common than they used to be. The SSK SSM-F200 is one example of this type of device.

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