@pparent Dino could be a good candidate chat works but no voice or video calls possibly due to missing dependencies. The UI is not touch friendly.
Personally I think these types of calls should be part of the calls and messaging apps.

As a daily user can I share my "bugs that drive me mad"...
Having read the thread so far, I've minimised the duplicate topics you've already covered including:-
RCS, VoLTE, notch/corners, slow GPS fix, backup/restore, small buttons.
Below is in personal priority of annoyance. Hopefully this ramble is helpful.

Clock app:-
In my opinion the clock/alarm app is terrible and annoys me daily. Stopwatch and Timer are much better to be separate better fleshed out apps. Missing timezone information for world clocks but hours ahead and behind useful feature to keep.
I would suggest having the top menu options as just World Clocks and Alarms windows, loosing the swipe up menu completely (see below). Having a separate settings menu for each. Alarms menu could have larger font for time more legible and note be one line to maximise space for alarms list, as too much wasted space.

General UI Swipe ups:-
I'm not sure about any of the swipe up menus across all of the apps. Yes they're mostly consistent to be "add new thing" but really can be achieved much quicker and intuitively with a + on the top menu in every case. Swipe up is not an easy gesture to do either often requiring two hands as you need to swipe at least 1/3 up the screen to open the window.
Only swipe up that isn't "add new thing" would be the phone app which I feel should just display recent calls list anyway with options to open either Contacts or Dialling pad.

Settings:-
Lack of network connection options frustrating, proxies, static IP's, DNS, automatic connection, priority, etc.
Needing to connect to things with static IPs is one reason I need to keep a laptop around.
Previous networks should only show if you successfully connected to that AP.

General UI PullDown:-
Calender from pull down shows incorrect dates for future months. Multiple times I have given incorrect dates due to this and now have to open calendar app not use the pulldown one.

Keyboard Layout not consistent with settings. With English UK set in settings, a bluetooth keyboard types English US and is shown in the keyboard pull down as US.

Phone:-
Better highlighting of missed/incoming/outgoing calls from Recent calls would be useful read at a glance. Red/Green/Blue text maybe?

VOIP or IM accounts for Calls and Messaging. No XMPP/Jabber?

Music app:- Resume playing on headset reconnection needs to be an option.
Not using local album art seems to be a bug, I have folder.jpg files for all my music and yet thumbnails rarely work.
Now playing gestures for play/pause (to go with swipe skip gesture) would help for driving.

Nice to Have:-
Adaptive Charging or Maximum % threshold should be available in battery settings.

Lack of Printing app as standard?

@gpatel-fr I believe you are experiencing:-
https://gitlab.com/ubports/porting/reference-device-ports/android11/fairphone-5/fairphone-fp5/-/issues/37
Which I occasionally have had on the current stable version anyway.
You can force it to happen if you play with the Network toggle buttons for a bit but in my general usage I find it's rare to trigger this bug.

@mango To answer the question yes you can run 24.04 comfortably with the 6GB/128GB, I am currently doing this.
However, you expand on this and explain your usage I would lean towards the bigger device.

Currently I have 43.8GB of free space storage and ~2.6GB memory free. However my usage is very different to what you are looking for.
I don't use Android apps at all, only native. I don't use Libertine much at all either. I do have lots of my own music and have a lot of offline maps downloaded which you may not.

Hopefully this gives you perspective from someone daily using the device.

@gpatel-fr Apologies if I wasn't clear.
It seems I recall incorrectly, have now found the correct information
You must not relock the bootloader if you downgrade Android version due to anti rollback protection.

I have the occasional issue of the keypad switching between number pad and keypad really fast on boot. I have read that is also related to the fingerprint reader.
I also as I say have the fingerprint working fine for the fingers I used when installing UT initially.
The device was BNOOTB and I flashed A13 from the FP website before installing 20.04 daily which was the only option at the time for FP5.
It would be pretty inconvenient to full wipe at this point without some backup tool as it's my daily drive. I would have to be certain it resolves the issue as it's not that inconvenient my fingers I use generally work even if I can't add new ones and I get the OP's error in the fingerprint menu.

Is it not also true you shouldn't downgrade a A14 to A13 as the bootloader will lock?

This is marked as a known issue and I have seen other posts about it.
I also still experience issues. I can't add new fingers at all but mostly my fingers I did from the installation time work most of the time.
https://gitlab.com/ubports/porting/reference-device-ports/android11/fairphone-5/fairphone-fp5/-/issues/26
Is there any confirmed solution that can be shared with people that are not on Telegram?

Ah thank you. This seems to have been set to tethering.
I wasn't aware this would also stop file transfers when I've been looking to diagnose why.
Resolved

My FP5 no longer appears in the devices list of my Ubuntu Desktop and seems unable to mount since the weekend.
I can't currently transfer files between them via USB which is pretty annoying.
The device was on Daily I have used the Installer to clear and reinstall Stable. Neither work.
The desktop has been rebooted, and the device shows as Qualcomm FP5 in lsusb when connected.
Anyone else experiencing this?

All notifications are affected.
The current options are wait for it to be fixed in stable or switch to daily.

Just go and use Android or other Android like OS if you want something like that...
Have you considered that doing something different is not ignoring anything.
As for intuitive this is relative to what people have used before.
People will have there own personal and group goals for these FOSS projects. Just because they don't align with your vision of what you believe should be done, doesn't give you the right to complain other people are wrong. It contributes nothing to moving forward.

@slowcyclist
There is a bug report which I found later.
This is supposed to be fixed now, however, it is not for me. Just sits with Server Stopped forever.
I don't see how I can disable and restart the service if you can't get past "Server Stopped" to get to the menus. Seems a clean install of the app would likely fix it, but how?
Is there some way to "purge" click packages; as in, remove all the configuration files when you remove them?
I'm thinking it may just be easier to have a list of packages, find out how to backup my contacts, call history and messages then wipe clean? Is there some information on doing that? Maybe an app or something built into UT to do that would be nice.

@t12392n
I can confirm this too.

Just a quick post for forum lurkers that updating to 24.04-1.0 stable on Fairphone 5 has gone smoothly for me.
To install use the ubports-installer select stable and leave the wipe data unchecked.
Then do reinstall all apps from the system settings menu.

Issue with Libertine is resolved only thing I have seen an issue with is OSM server not starting for Pure Maps but I haven't tried debugging yet.

This is a workaround that I have been trying for a little while.
Try constructing the message then switching airplane mode on then off before sending.
I read something similar on another post and it seems to work for me so far.

It doesn't seem bricked from what you have said.
If bootloader is unlocked try the installer again, maybe from another machine or try another port or usb lead.

@knuddel823 It's recommended to install Fairphone version of Android 13 as per the install instructions.
https://devices.ubuntu-touch.io/device/fp5/release/noble/#installerDownload

Run the installer, it should detect your device and then use the option to reinstall but don't tick the wipe personal data option.

@RJDan Yes you need the Fairphone version as per the install instructions.
https://devices.ubuntu-touch.io/device/fp5/#installerDownload

@keb You can use the installer to reinstall without wiping personal data.
If that doesn't fix it you can try backup calls, messages and your personal files then full wipe.