My Mavic 3 reported during the flight (previously more than 20 satellites were connected):
--- German messages translated by me, see pictures ---

"GPS interference on the aircraft"
respectively
"GNSS interference on aircraft. Aircraft cannot fly stably. Land or return immediately"

I had activated the screen recording on the RC Pro. The images were taken from the video at intervals of a few seconds.

What cause can be responsible for this? What should I do?

I have heard of a few guys from Germany suffering this dilemma on another forum as well. Nothing much can be done until Dji rolls out the new FW.

Suren Posted at 4-27 11:06
I have heard of a few guys from Germany suffering this dilemma on another forum as well. Nothing much can be done until Dji rolls out the new FW.

Suren,
thanks a lot for watching this...
I'm still hoping for a statement from DJI...

Thistle Posted at 4-27 12:32
You're not going to get a "statement from DJI" by posting on a forum where some DJI contractors simply cut and paste responses here. At best, you will get "Thank you for sharing these information and happy flying".

I am afraid you are right.....

Sorry to hear about the interference during your flight.  On the other hand, those communities look stunning and beautiful.  You have some great scenery on your drone jaunts!

TonyPHX Posted at 4-27 14:57
Sorry to hear about the interference during your flight.  On the other hand, those communities look stunning and beautiful.  You have some great scenery on your drone jaunts!

Hello TonyPHX,
many thanks for your comments...

The easiest thing for me was to do a screen recording and show the problem areas without too many words....   

This is strange! In one of the screenshots you can see 21 satellites, but no GPS Lock (satellite icon red). Good that it didn't switch to Atti mode, it could with those conditions.

An unrelated question: How did you get Mapbox maps instead of Google Maps in DJI Fly? I know it is an option in Litchi, but I didn't see an option like that in DJI Fly. Where can you switch map providers?

Curious I had this on a Mini2 flight yesterday,   put it down to bad alignment and it soon went away.

Franky, Maybe one SV constellation had a technical issue and was dropping in and out / not meeting HDOP/VDOP parameters? You could check projected SV coverage before flight and differentiate between constellations, if 2 constellations have 10-12 (or more) SV's for your flight it may not occur. Maybe the M.3 is faultless in this case. Projections at your location respectively show: 2000 tonight - 8-9 SV's with GPS+Gallileo or 21 with GPS+Gallileo+BeiDou / / 0500 tomorrow - 9 SV's with GPS+Gallileo or 16 with GPS+Gallileo+BeiDou. The SV changes you experienced approximate BeiDou SV coverage in these screenshots, and somewhat tie into system advisories. I have been monitoring constellation coverage since FW.0500 was released in January as I tried to understand what was occurring.  As you can see, I am new to this forum and I am sure there shall be viewpoints offered that differ (possibly vehemently) to my suggestion.

Yaros1 Posted at 4-27 23:07
An unrelated question: How did you get Mapbox maps instead of Google Maps in DJI Fly? I know it is an option in Litchi, but I didn't see an option like that in DJI Fly. Where can you switch map providers?

Hello Yaros1,
this lettering "mapbox" always appears on my map without ever having used "mapbox"...
What does this map look like on your display? Does it say "GoogleMaps" or something similar?

I use my smartphone as a hotspot and have connected the RC Pro to it so that I can always see an up-to-date map on the RC Pro when I'm out and about...
I always thought that this text "mapbox" is automatically displayed by the FlyApp, I never thought about it.....

frankymusik Posted at 4-28 22:41
Hello Yaros1,
this lettering "mapbox" always appears on my map without ever having used "mapbox"...
What does this map look like on your display? Does it say "GoogleMaps" or something similar?

No, on mine it doesn't show anything but the map is also different.
On your screenshots I can see a map that looks very similar to OpenStreetMap not Google Maps.
On mine it is Google Maps instead.
Maybe it depends on the region you're viewing, but I never saw mapbox used in DJI Fly, I know that you can switch to it in Litchi, but not in DJI Fly.

Strange!

djiuser_VqaUH68 Posted at 4-28 04:12
Franky, Maybe one SV constellation had a technical issue and was dropping in and out / not meeting HDOP/VDOP parameters? You could check projected SV coverage before flight and differentiate between constellations, if 2 constellations have 10-12 (or more) SV's for your flight it may not occur. Maybe the M.3 is faultless in this case. Projections at your location respectively show: 2000 tonight - 8-9 SV's with GPS+Gallileo or 21 with GPS+Gallileo+BeiDou / / 0500 tomorrow - 9 SV's with GPS+Gallileo or 16 with GPS+Gallileo+BeiDou. The SV changes you experienced approximate BeiDou SV coverage in these screenshots, and somewhat tie into system advisories. I have been monitoring constellation coverage since FW.0500 was released in January as I tried to understand what was occurring.  As you can see, I am new to this forum and I am sure there shall be viewpoints offered that differ (possibly vehemently) to my suggestion.

I sent you a PM so as not to have to be too "detailed" here....   

Yaros1 Posted at 4-28 22:48
No, on mine it doesn't show anything but the map is also different.
On your screenshots I can see a map that looks very similar to OpenStreetMap not Google Maps.
On mine it is Google Maps instead.

... yeah, that's really weird.
I only know it that way, maybe it really depends on the region in which I use the FlyApp...
Strange...

frankymusik Posted at 4-28 22:52
... yeah, that's really weird.
I only know it that way, maybe it really depends on the region in which I use the FlyApp...
Strange...

Maybe it also depends on which version of DJI Fly you're using, or something else too.
I found this on mavicpilots: