Here are the videos recorded about mobile:
https://video.fosdem.org/2026/ub4132/
UT is mentioned in the videos about state of Foss on mobile and the one about the apps store: the UT one is rather well placed, however Flatpak is coming for mobile and it has already a dominant position in general Linux apps.
The video about openHarmony is intriguing given the resources of the organisations behind it.
I have been interested by the one about push notifications, apparently more ready for prime time that I was thinking. It seems that the only real solution for Linux clients is the kde one, that would seem a good fit for UT since it uses QT.