Actually, the 10 II also had (still has?) the echo problem, just different (in the speakerphone mode rather than the earpiece mode). I don’t know if the root cause is the same or not, though.
Of course it will. But I meant something different. I meant that introducing support for a new model takes a lot of time and work, anyway. Even just to address that whole lot of new challenges that you’ve just mentioned.
So - knowing how limited their resources are, and that they surely won’t be able to do everything at once - the actual question is whether Jolla should first focus on bringing VoLTE out of beta, implementing the Camera2 API, at least starting to think about some sort of support for things like 5G, VoWiFi, etc., or maybe instead of that they should focus on supporting a new model that without any of those features will end up as just a slightly newer and slightly faster 10 III, but with still only one camera usable out of 3, no 5G, no VoWiFi, a semi-working VoLTE, and so on.
And it’ll always be like that until Jolla themselves start selling it. I mean buying a batch of devices (I’m sure they can assess the right number based on their licence sales in the recent period of time) and offering them via their shop (which obviously would not mean that one couldn’t buy it elsewhere). Otherwise, with every new model it’ll look exactly the same as with the 10 III because there will always be a considerable delay between when Sony launches the device and Jolla manages to port SFOS to it.