

Yeah, KaiOS is dead.
Here is what I have - there must be a local version https://opelmobile.com.au/product/touch-flip/
It’s Android 8.1. I installed a different launcher, small browser (SmartCookieWeb) and a few other essentials (banking app, QR reader etc). If you don’t mind the flip factor (the T9 keyboard is a dream on this one…and with TT9 Whistle, I have the best of all worlds)
EDIT: Found it https://sunbeamwireless.com/product/sunbeam-f1-orchid
US version is more locked down but jailbreak guides avail https://furbreeze.github.io/2025/01/23/sunbeam-f1-root.html

It depends. Some services, like native XMPP, don’t work through a standard HTTPS reverse proxy. Tailscale, NetBird etc. handle them fine, but you need direct TCP access or TCP forwarding instead. Other services can use HTTPS without problems.
I think the HTTP versus HTTPS distinction is less important when you only access services through a trusted LAN or a private tunnel.
Tailscale and NetBird already encrypt traffic between devices, and isolated containers provide another layer of protection. Plain HTTP on a LAN still carries some risk, but I’d argue that HTTPS is less critical in these circumstances.
In your particular case, NetBird’s reverse proxy can handle HTTPS for the browser while the service itself uses HTTP over the encrypted tunnel.
Just make sure that your proxy actually restricts access to your private network.
So the answer is “it depends”.