@TotalSonic : Thanks for the answer!

I do not know, if "OS" is the best category for this question. In case someone has a better suggestion for a category to post this in, I will move (or delete and repost) this message.

Yesterday I installed Ubuntu Touch 24.04-1.x Stable on my Volla Quintus. Because I really like the snap feature, I immediately installed Firefox and Vivaldi via snap.

Icons for both apps show up in the list of apps.

When I start Vivaldi I see the browser window. Clicking in the UI of Vivaldi works. But I cannot type in a URL, because the keyboard does not show up when I click into the URL field. Is there a way to force displaying the keyboard?
Another problem with the snap installed Vivaldi: Often when I started (and closed, as far as possible) Vivaldi, the smartphone cannot be restarted or shut down via the menu. Only pressing the on/off-button works.

When I start Firefox a transparent window appears. It can be closed but there are no visual elements.

Did I do something wrong, is this simply a work-in-progress, or are some of the problems bugs and should be reported?

@Bolly , thanks for your answer! My Volla Quints is not available currently, but I will try the app when I can use it again.

@sophiakaile , thanks for the idea! But, how can I record the audio separately? Or do you mean via microphone with another device?

Today I found that someone has a similar problem with the Volla Phone 22 : https://forums.ubports.com/topic/10983/volla-phone-22-very-laggy-performance/5?_=1756284607730 . Maybe both problems are caused by the same thing.

I have a similar problem with my Volla Quintus, see : https://forums.ubports.com/topic/11263/frame-rate-and-slow-animations-movies .

I am already in contact with Volla about this. But because "laggyness" or "low framerate" is quite subjective (not easy to measure in technical terms), except you can record the screen in high framerate and without aliasing, it is not easy to talk about and to discuss this problem.

Well, maybe not a 20 years old smartphone, but a smartphone that is 15 years old.

@TotalSonic : Thanks for the answer!

When I watch, on my Volla Quintus with Ubuntu Touch, movies on youtube in Morph or when I simply scroll a web-page up or down, the framerate of the movie and of the scrolling-animation (I think, there are better words for this, but I hope you understand) seems slower than with my old Volla 1 and much slower than with my Fairphone 4 with Android. Because of this, watching movies makes no sense and scrolling a web-page up or down makes me feel like using a 20 years old smartphone with new software.

Does anybody else have this problem?

On the page https://devices.ubuntu-touch.io/device/algiz/ the wireless connection is listed as "working". So I think that someone must have tested a wireless connection between at least one monitor or monitor/adapter combination and a Volla Quintus. So at least this monitor or monitor/adapter combination works for sure without testing on my side.
Does anybody know, how I can find out, which combination was tested and thus produced the check sign at the topic "Wireless external monitor" on the page https://devices.ubuntu-touch.io/device/algiz/ ?

(Or is it unrealistic to think that this was tested? )