https://forums.puri.sm/t/the-current-state-of-the-librem-5-i...
https://forums.puri.sm/t/nine-months-librem-5-as-my-only-pho...
> such as Signal
I saw people using Signal on the forums, but Signal intentionally doesn't directly support ARM desktop GNU/Linux, so it's not straightforward AFAIK.
> and a banking app
This depends on the bank. Some banks allow to use their apps with Waydroid.