They’re usually used to make connecting to hotel Wi-Fi easier (you connect your devices to its ssid, then connect to its admin page and connect it to the wifi, or just plug it in to the lan).
Just saw the edit and if you don’t want to go the router route + LAN for some reason guess another option would be a ucb c dock that allows power pass through. I have an anker one that I use on occasion and recommend it. You can then either get an external drive or a SD card.
Bluetooth is probably too slow for what you want, but you could use your old phone as a Wifi hotspot and even install various server software on it via Termux.
If you don’t have concerns about it being private I’ve used one of these for similar purposes in the past. Just a little portable DLNA server. The original project stopped but there are forks or the last version of the original out there.
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Does it have support for microSD cards?
GL.iNet’s travel routers have a USB port and support plugging in a EHDD to share over the network they create.
Pretty sure some even have an SD card slot too so even less weight to carry
Some travel routers have a USB socket for media.
They’re usually used to make connecting to hotel Wi-Fi easier (you connect your devices to its ssid, then connect to its admin page and connect it to the wifi, or just plug it in to the lan).
Tp-link ac750, for example
https://www.tp-link.com/us/support/faq/340/
If you’re looking for something you can carry about and use to store data on, why not just a USB-C thumb drive or external SSD?
Edit; this is intended for photographers, but you can get external SSDs that create their own WiFi network so you can transfer files wiressly to and from them: https://www.westerndigital.com/en-gb/products/portable-drives/wd-my-passport-wireless-ssd?sku=WDBAMJ2500AGY-EESN
Maybe be more specific?
For traveling I would suggest a laptop to behave as a server but the IP address changes a lot when traveling.
I’d personally opt for something hosted at home if possible like Nextcloud and Jellyfin with static IP and port forwarding to access on the go.
Tbh though, if you just want storage on the go buying a portable 1-4TB drive that connects via USB-C is enough.
Just saw the edit and if you don’t want to go the router route + LAN for some reason guess another option would be a ucb c dock that allows power pass through. I have an anker one that I use on occasion and recommend it. You can then either get an external drive or a SD card.
Get MaterialFiles and turn on sftp server to share all your files via network.
Then same network whether its hotspot or home WiFi.
This seems a bit impractical. 2 phones to keep charged and manage.
Depending in your use case can’t you just get some external USB storage?
Bluetooth is probably too slow for what you want, but you could use your old phone as a Wifi hotspot and even install various server software on it via Termux.
Corollary: https://thin.computer/index.php/2024/03/21/using-termux-on-android-for-self-hosting-yes-really/
If you don’t have concerns about it being private I’ve used one of these for similar purposes in the past. Just a little portable DLNA server. The original project stopped but there are forks or the last version of the original out there.
https://en.m.wikipedia.org/wiki/PirateBox
That’s a neat idea of using an extra phone as a file server. I’ve only thought of phones as consumers, not providers.
@BigMikeInAustin @Pretzilla Only thing to worry about is the battery of the phone if its being left on 24/7
I would have to find a way to keep them on without needing a battery inserted.
Get a NAS for home, and VPN in as needed. Store all your media on the NAS, and also use it as a phone backup target.
Downside might be that this requires a good internet connection, which depending on where OP travels might not always be available.
Thanks but looking for offline solutions
This. Tailscale is a VPN solution for this that’s free for personal use.