While we are waiting for PureMaps to provide offline functionality, here some instructions on how to get offline maps for uNav working using downloadosmtiles. I do post this here because I did encounter a few stones on the road to success.

1. download downloadosmtiles from the left hand menu
2. extract to a folder on your harddisc, i.e. Downloads/osmtiles
3. run the script with perl downloadosmtiles.pl --link='http://www.openstreetmap.org/?lat=49.5782&lon=11.0076&zoom=10&layers=B000FTF' --zoom=5:16 --destdir=somewhere/maps

• of course replace coordninates with your target coordinates, the area seems to depend on the zoom value after the coords
• replace the path for destdir with another one, default is the current working directory
• change zoom levels, levels above 16 do take quite some time to download, you can download 5 to 16 first, and only level 17 or above later if you really need it

4. copy the map-files (foldernames = zoom level i.e. 5) onto your phone i.e. in a folder Documents/uNav_maps
   [zip the map tiles and copy the zip file, that is much faster than copying thousands of files]
5. in Terminal app run the following commands:
   cd Downloads/uNav_maps
rsync -avp . ~/.local/share/navigator.costales/maps
   [rsync is faster than cp and gives you progress information]
6. open up uNav, goto settings, change Modus to offline maps

EDIT:
To specify a bounding box for the tiles do be downloaded the command in step 3 needs to look like this:
perl downloadosmtiles.pl --latitude=47.35371:49.93708 --longitude=7.38281:10.54687 --zoom=5:7 --destdir=somewhere/maps
edit finished

Have fun! Don't get lost!

for lazy guys like me:
If you do this regularly, you may wish to create yourself a small shell script in your phones home folder called i.e. cpbash.sh. Then only open Terminal and run bash cpmaps.sh. Put the following two lines into the script:
cd Downloads/uNav_maps
rsync -avp . ~/.local/share/navigator.costales/maps

Troubleshooting: (on ubuntu 18.04)
... Can't locate Geo/OSM/Tiles.pm in @INC ...

• open the file downloadosmtiles.pl in a editor
• before line 6 add the following line: use lib '/Downloads/OSMtiles/Geo-OSM-Tiles-0.04/lib';, replace the path with your download location

... Can't locate Geo/OSM/Tiles.pm in @INC ...

• install YAML.pm by running: sudo apt-get install libyaml-perl

• you may need to create the folder maps to be like this: ~/.local/share/navigator.costales/maps, then map data wants to be in there in a structure like this (see https://unav.me/offline/) :
  ~/.local/share/navigator.costales/maps/10/
  ~/.local/share/navigator.costales/maps/10/523/
  ~/.local/share/navigator.costales/maps/10/523/331.png

He has been mentioned, but many, many, many ... thanks to @bhdouglass master of OpenStore!!! What would we be without our OpenStore? Great work done there - and certainly a lot of time spend.

Many thanks to everyone working on clickable - I know for sure @bhdouglass and @jonius - who provide a magical and crucial tool for us to create apps.

Thanks @bhdouglass for asking me to maintain weather app. With your advice and a lot of starting help by @jonius , design guidance from some weeeee helper @CiberSheep I am happy to be able to contribute.

Also many thanks to all translators like @Anne017 for hours of translating, so others with less knowledge of the English language can enjoy Ubuntu Touch.

And thanks to everyone else here making up a nice community!

Edit: I forgot to mention two important contributors: @Krille and @nanu-c . With a lot of time and love they provide apps for matrix and signal. Significant add ons next to Teleports. So man thanks to you too!

@mymike It is not only the fresh new design. But being able to delete those items from system settings I would call a breakthrough. Definitely worth appreciation.

@dtarrant I had a look, yes, the app is not using a terminal command (as I thought). It is changing a gsetting.

gsetting values can be changed via terminal too as described here.

The schema is "com.canonical.Unity8". The actual setting value is "usageMode". (taken from UT Tweak Tool's code, not checked)

So in theory something like this run in terminal should work:

gsettings set com.canonical.Unity8 usage-mode Staged
gsettings set com.canonical.Unity8 usage-mode Windowed
gsettings set com.canonical.Unity8 usage-mode Automatic

Havn't tried it though.

Edit:
If you wish to do this without terminal but from inside an app, have a look at my ThemeSwitch branch where I implemented a working way of changing a gsetting.

Edit 2:
I edited the mispelled commands here too as pointed out by @Pulsar33.Thanks for that.
Although if it is usage-mode, then I don't know why or how UT Tweak Tool can work, because that is using usageMode. But maybe I overlook something.

Call for maintainers!

There are quite some core apps without a maintainer for a long time. Camera app and clock app joined that list this week.

Core apps need your help! Is there anyone with coding experience willing to take up the task? Please use the Q&A to ask around.

Just want to share the news here, that on focal devel channel the OP5T now allows installing via system settings. No installer needed anymore. Big thanks to Ratchanan!

@LDovic Hi and welcome. Apps for Ubuntu Touch, including most of the core apps, are build using clickable. So yes, a linux OS is needed for developement.

As already has been said, apps are hosted mainly with Gitlab. For some general information to get you started check out our doc . You will also find some links to Telegram groups there.

If there is one of the core apps you like best head for issues, if you are looking for a starting point. Or if you already have an idea to add THE missing feature just go for it.

Sure. Take your time, even more in those special times. I did not want to rush you or put pressure on you. It was merely supposed to be a suggestion.

Thanks for the work anyway. The demand proofes that you are working on something important.

@Rondarius You are right, I am not very busy at the forum. But if you ping me, I will get an email.

Regarding the patreon merchandise, I managed to find out that the shop is currently undergoing some internal changes and handing over duties. I am not involved myself, but I kindly ask you to be patient. Your case is known now and hopefully can get sorted soon.

@99 I know about that link, but the wikipedia page for JTileDownloader states that it is blocked by the servers. And at least when I tried it I could not get it working. Thats why I posted instructions for another way to download files.

But if JTileDownloader works (again?) that would be nice!

@vince-vs Yes. On my OP5T it works. But now you mention it, yes, there was a time when it did not work. I am on focal devel channel. Maybe there was a fix that has not landed in other channels yet. But doing a fresh flash can not harm.

Try flashing without wipe first, to keep your data. Or try changing the channel (and go back if you like). In the worst case try a full flash.

@vince-vs Yes, the led works for notifications on the OP5T.

And regarding your idea of 10 people working together on the port of a device, they all would ideally need to have that device so they can test. And who is going to pay for those devices?
Just to give you one idea why this is not very likely to happen this way, for your understanding. Because I believe, understanding the reasons is important.

Not sure though, what the porter means with "wait for implementation in os side". Ubuntu Touch does definitely allow notification led and supports it. I did have that on my old BQ E5, on my Xperia X and now on my OP5T. I understood this to need device specific enabling. But I am no porter.
Some devices ship camera software within the camera, others only rely on the OS. So it might be a case of this. For some devices led works out of the box, for others it doesn't. But again, just the guesses of a non-porter.

@vince-vs Thanks a lot for your feedback. Glad I could help.

@JohnnyT23 I am afraid right now I need to say: no.

I do have so many things I want to do, that are important to myself or that I consider important for many users. I do not have enough spare time to get done what I wish to do, not talking about taking on even more work. In the end, this is only my hobby, coding for UT. Family, work and everydays life need to be catered for as well.

The second reason is, I don't really know where I would need to change things and how much work it will involve. So I can't name the time it takes and even think about a price tag.

@Chester I am afraid with mms I can't help. That has never worked for me and here mms are going to be fully shut down. Some providers already did, others will follow.

@Charly I hope the fix will land soon, but I guess I will need to ping some people to check it. Then it will be released either with a new release of camera app or the next OTA. Fingers crossed.

You can find out about existing bugs in the corresponding bug tracker. All apps should give links on their OpenStore page. All core apps "live" here: https://gitlab.com/ubports/development/apps. If the issue involves a core component, not an app, you can look at the issues in the core repositories here: https://gitlab.com/ubports/development/core.

You (both of you) could try to clear the app cache. This is located under your home folder.

In filemanager unlock to view hidden files, then head to ~/.cache/messaging-app and delete that whole folder.
In Terminal run rm -f ~/.cache/messaging-app. Not sure if that would require being done with sudo. You will need to try that out.

If that does not help, you could clear all configs and data from messaging app.
Of course back those folders up before deleting them. Or try simply renaming.
Those are located under ~/.config/messaging-app and ~/.local/share/messaging-app.

Are those apps where you commented out that line build for focal? Or do you have some xenial apps running that do still work under focal?

This is a known bug. I also already proposed a fix, but that has not yet been reviewed, merged and released.

So I can only ask for patience, unless you can build the app for yourself from the branch of my MR.

@JohnnyT23

We do have two themes, Ambiance and SuruDark. Do you know about those? Their colors are described here.

SuruDark is not 100% black/white, but dark with bright letters. You can change the theme either via apps like ThemeSwitch. Or you edit the theme file manually (/home/phablet/.config/lomiri-ui-toolkit/theme.ini for focal).

If you really want black and white, you could create another theme. That should be possible, although I don't know where the themes are located in our repositories.

With a new b/w theme, you would have to match all colors to black or white.
So an app does specify theme.palette.normal.base for background and theme.palette.normal.baseText for Labels.
In Ambiance this would come up as bright brackground with grey letters. In SuruDark it would be almost black background with grey letters. So your theme would need to match this to use either full black background and pure white letters, or the other way round.

That just as another idea. And I am not saying that it will be easy...