For completeness sake, here are a couple of other decent alternatives to the FuriPhone:
1. The Volla Phone Quintus, with Ubuntu Touch: https://volla.online/de/shop/volla-phone-quintus/
2. Jolla C2 (or any other supported Xperia device), with SailfishOS: https://commerce.jolla.com/products/Jolla-community-phone
> Your purchase includes a 12-month Sailfish OS full license subscription valued at €59.88 (€4.99/month), granting access to all releases, commercial components, and feature upgrades. After the first year, you can choose to continue your subscription and support Sailfish OS development further. Even without renewal, your device will continue to function, but future software updates and commercial component upgrades will not be available.
Just a note of something I came across when looking just now. Don’t mind paying for continued development but worth knowing before you buy.
Jolla is really good. SFOS can even run lots of Android apps on an emulator, including banking apps, with zero issues. And the native ones are a delight to use, great indie apps. I wish they got funding from EU and became a completely open source alternative to the duopoly.