1) Have you considered how this could be made more mobile friendly? Most places I could see myself using a device like this, I wouldn't have access to WiFi. Is there an equivalent of a USB SIM card adapter that would fit here?
2) What sort of battery life can be achieved with this?
Looks great though! Am very likely to order an iteration of this :)
1) maybe? this is just a hacker device for now. You can easily add a USB LTE modem if you'd like.
2) battery life will depend on which OS you use, peripherals, software duty cycle etc. It's a hacker device, don't expect it to work without putting in the effort to tune/tweak it.
> You can easily add a USB LTE modem if you'd like.
Would you like some help with that?
I was only planning to add sixel support, but I could prepare you a simple configuration to use a cheap 4G module like the Quectel EC25 () at least for sending/receiving SMS, and maybe acting as an access point.
() Other options would also be possible, like Qualcomm SDX55 and SDX62/SDX65 for 5G, but the Quectel has more community support since it's also used on the linphone
I'd certainly publish a guide and a set of files to flash.
Using an internal Qualcomm SDX module, I've already got both 4G and 5G working great on my Thinkpad with just a few AT commands, so I don't foresee any practical difficulty except maybe getting MLC03 submmWave antennas (I can't find any, so I stick to B71 on 5G)
We seem to have very similar interests; if you want I can let you know when I release that (though it'll be nothing very complicated - just a few scripts to send and receive the right AT commands, along with a small README explaining how to provision the module with the right settings for your provider)
The Hayes protocol and 3GPP “standards” will be the death of me, but if you want any help with getting any of the Simcom modules up I have far too much experience with them
1) Have you considered how this could be made more mobile friendly? Most places I could see myself using a device like this, I wouldn't have access to WiFi. Is there an equivalent of a USB SIM card adapter that would fit here?
2) What sort of battery life can be achieved with this?
Looks great though! Am very likely to order an iteration of this :)