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, essentially acting as wireless backup storage. I haven't had much luck finding one and may be missing the right search term. Does a product like this exist, or is there a specific type of device I should look for?
4 Answers
If wireless transfer isn’t essential, a USB-C adapter with a microSD card reader is much simpler. You can plug it directly into the phone and copy the photos without needing a separate wireless device.
Another option is to connect an SD card reader to a router with a USB port. If the router supports USB storage sharing, your phone may be able to upload photos to the card over the local Wi‑Fi network.
You could build this with a small Raspberry Pi, a USB microSD card reader, and file-sharing software. The Pi’s built-in card slot is normally used for its operating system, so an external reader would be needed for the storage card.
Some wireless storage devices have existed, but they’re fairly uncommon now. The SSK SSM-F200 is one example of a portable Wi‑Fi drive that may still be available, although devices with a built-in SD or microSD slot are harder to find.
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