I bought a OnePlus 6 for 50 euros from eBay and I can do a ton of things with it already. Plasma is great in mobile, and what did not work I got working pretty fast together with Kimi and DeepSeek.

For example here's patches to get NFC YubiKey working in Secrets app:

https://github.com/pimeys/oneplus6-yubikey-nfc

It is a work in progress but pretty easy to pick things up and fix in this age of agents...