I can see two sides to this:
Removable batteries are great, if you want longevity for a phone, and don’t mind sacrificing water resistance.
On the other side of the coin:
Removable batteries have more potential to lower water resistance ratings.
I think more manufacturers should give the choice of a model with a removable battery.
Using SMS through signal defeats the purpose of signal…
The UI is fine, what more do you expect out of it? It has a list of chats, a menu button with menu options, like it’s a messaging app not a social media platform akin to discord or telegram.