The problem is the channel range on 5 GHz and implementation obviously being a mess in general.
If you search the internet you should be able to find that there are other devices out there having problems with channels 116 and upwards, and there are even devices out there only able to use channels up to 48 or something.
Any of these devices will potentially run into the same problem when connected at 5 GHz Wi-Fi to an AVM box as soon as the AVM box decides to use a troublesome channel, either because the box is allowed to choose automatically (= default setting), or because it evades a manually fixed troublefree channel and goes to a troublesome channel (because of supposed interference on the manually fixed channel) without timely returning to the fixed setting.
Wi-Fi Alliance Fairphone AVM … brilliant 21st century tech.
Ok, I see. I have an AVM router, too (7590), but everythings works very fine.
We all know about the problems with some channels in the 5GHz band because of weather radar, or to be more precise: Because of DFS.
Most affected are the three bands 120 and up. Wikipedia is wrong by saying these are the only bands affected by DFS, I suggest the official documentation instead (document by German authority, in German language).
So when living nearby a weather station, airport, etc. it could be helpful to limit the AP to channels not affected by DFS.
I don’t see that the FP3 is more irritatet by these mechanisms than other phones. Maybe I am just lucky, maybe Fairphone is not to blame and AVM is not to blame.
In general it was a baleful decision by European authorities to open frequency bands for WiFi which are already used by other services.
How much memory do you have as given the default camera can only use the internal memory I imagine that’s the only one that matters, assuming the SD card is formatted as External.
I have 48 of 64 GB internal space occupied and 84 of 256 external memory.
Previously, my SD card was formatted as external (I think? the option that did not cause issues. I cannot see any option to change this or check it in the current settings) and indeed was the save location for my pictures. There was no issue with saving there before.
I can give further information about the problem. It seems to be related to my rear camera. I hear an audible click as it tries to focus the camera. Shortly after the click the app crashes. This does not happen with, say butchercam.
Edit: The camera focusing was a false alarm. After clearing settings of the app again and managing to briefly switch to the front camera, the issue persists and the camera app crashes shortly after starting.
So far only those have issue that had SD card selected as storing location before the upgrade. As this feature is no longer available that might be the root cause, so I would advise everyone to change the storage location to internal before upgrading. And if not done, this need to be reported to Fairphone
fairphone 3+, camera, Your SD card is running out of space
when I open the camera App, I always get “Your SD card is running out of space. Change the quality setting or delete some images or other files”. However, when I look in the settings, I find Storage set to “Phone”.
I can set Storage to “SD card”, but am still unable to take photos/videos. When closing/opening the app again, Storage is set back to “Phone”.
Storage on Internal is 4,5 GB free
Storage on SD card is 48GB free (of a 128GB SD card)
SD card is mounted as Portable Storage
Power off/on: does not help
Restart: does not help
Clearing the cache of the camera app: does not help
Ejecting/mounting the SD card: does not help
It all started with the last FP update some days ago.
So at the moment I have a phone with a camera and can not take pictures/videos
Any other suggestions/help?
Your post helped me troubleshoot a bit more. Physically removing the SD card, clearing app info and cache did allow me to open the camera app. However, once I inserted the card again, the app crashed. Therefore I can say that I have an issue with the SD storage and the camera.
Edit: However, ejecting the SD card in software does not allow one to use the camera. The app first mounts the SD card, gives a dialog about it and then crashes. Are you experiencing this as well? Edit 1.5: Removing the SD card, resetting app settings to standard, re-inserting the card, did not initially resolve the issue. However, a few restarts after doing so, it seems to have resolved the issue.
Edit 2: (re: suggestions) I have a couple of camera alternatives that I’ve used. The two below are my go-to’s when the normal camera won’t suffice.
Butchercam has good picture quality but it’s a gcam app so can be sometimes unstable
OpenCamera is a simple open source camera that is no-frills but is not as snappy as the in-built app.
Edit: As I’ve mentioned in a later comment, I can use the camera app for the moment to take pictures. I removed the SD card, opened the camera app (works just fine without an sd card), and reverted to default settings. After putting the card back in, the issue went away after a few restarts.
Great job, it worked without incident for me to upgrade, and my phone, that was starting to feel a bit slower, seems to be working better after the upgrade to Android 11.
Hum, yes, I can imagine how the Camera app could be confused. I myself have seen this sort of thing before when feature removal is inadvertently incomplete.
Whilst it presumably depends on the app, would it make sense to ensure ALL apps are set to use Internal Storage (not externalSD) before upgrading?
Presumably, deleting and then reinstalling the default (Google) Camera app would also unbrick the app?
With both methods, a comprehensive backup before would be very highly recommended!
As an aside, I just noticed several hours ago (after a manual check (no push message yet)) there was an update to Android 11 for my FP3. First thing I did was visit this Forum to check and see what “gotchas” people had noticed… something with the WiFi and this Camera-externalSD are perhaps the two top ones. Thanks for the forewarnings!
The SD card can be selected in Open camera but not in the default, so try and move data manually to the SD card to free space on the internal memory.
Just to note I had mine set to SD which was set as Poratable/External at the time of upgrade and I have no problem with Default Camera, Gcam-Nikit8 or Open Camera, other than in the Default Camera setting to SD card reverts to Phone(internal)
thanx for your help.
OpenCamera works, but is way to simple for me.
I am also looking for inductive charging (which FPs do not have), so sadly I think I have end this fair experience.
I have another FP3 that went from A10 to A11 beta but it is the same.
In fact the version number of the beta is the same as the official All 0010 and the beta version cannot be updated to the offical public version as it says it has the latest update. ??
So it appears the A11 beta wasn’t changed and release as public, though I did note there is an 0011 version.
Just to add to Yvmuell views both of which I support.
True even the FP4 doesn’t have built in wireless charging but you can use an adapter if is very important, clearly not ideal if you have to carry it around. Presumably that is why people want that option, so as not to have to carry a cable for charging ~as there is no other benefit. In fact only detriments to the phone and ‘waste’ of electricity OH! there’s probably more.
On the Open camera, as said, there are lots of options.
Not trying to get you buy a Faiphone I wouldn’t do that to anyone who doesn’t put Fair trade as the priority and then I wouldn’t have too.
Fairphone 
Whilst it presumably depends on the app, would it make sense to ensure ALL apps are set to use Internal Storage (not externalSD) before upgrading?
OH! there’s probably more.