Sadly there was no VCF Berlin 2025 this year, but I'll make sure to put my whole collection of legacy pocketable computing devices on display.
Meanwhile, you can enjoy my reports on VCFB2023 and VCFB2024, as well as the online version of my collection.
Loved my psion5 if I could get it talking to modern windows or Linux I'd probably still use it. Awesome little machine.
PlanetComputers Gemini is a pretty close modern day replica made by the same engineers who put their experience into creating the Psion 5.
Quite pricey for a somewhat limited by today's standards smartphone if you ask me, but still available on Ebay.
https://www.ebay.de/itm/336168116080 for example.
And yes, it can run Ubuntu.
I understood that software support on the Gemini is a bit…lacking. As in, support isn’t in the mainline kernel and hasn’t been kept up to date. Happy to be corrected, though