Meta4,
thanks for your concern. Sorry that I have not documented everything the way you would like to see it. But I think you can appreciate from the others who have responded that this problem is not just my problem. I checked "red arrow" on the search engine and found about 40 threads that talked about peoples problems with red arrow orientation.
MOST IMPORTANT CLARIFICATION: your example shows the radar blimp image. It is not the RADAR map which is rectangular in proportion. All of my descriptions of problems have been with various combinations of the red arrow MAP system (both locked and unlocked). Additionally, still images will not show the complete problem. It needs to be video to show drone changes and how the MAP screens react.
I have documented that with the RADAR blimp image I generally do get the red arrow at the periphery of the map to align with the direction of the drone. But I have had several cases where that is not always the case, especially when you are controlling the direction stick while flying.
I have Mavic Pro with 5 cell phones connected (and some tablets that I no longer use because the
goggles do such a great job). Two of my cells where on the "official approved" list when I got the MP last Feb but now are no longer on the list. My primary cell for flying are two Hauwei Sensa Lite (model H710VL) with 5.5 screen and very fast internal processor for Android. On one Hauwei I run the NLD mod client software to remove all the NFZ next to my house and flying field. The other one I keep at latest firmware version levels. I generally test both of them "back to back" to be sure both give me the same results. Which after I learned about "unlock" they both do.
In "locked" mode, all my cell phones have the red arrow in MAP view at 90 deg CCW to the real direction the nose of the drone points. This problem with arrow not pointing right is EXACTLY mirrored in the
goggles white outline arrow.
In "unlocked" mode for red arrow in MAP view, the alignment generally works but after several cell phone map compass calibrations I had them change direction (randomly 30 to 45 deg of the true position). The alignment is very strongly affected by using the direction sticks while the drone is in flight. Once stick is released, the red arrow returns to original orientation.
My recent tests with the RADAR blimp image generally shows good alignment but they also have the problem of random "dancing around" when I use the direction stick during flight.
Some of the other cell phones have red arrow problems that change with cell compass calibration. Today I found out that my Samsung Note 4 can strongly affect the red arrow alignment in "unlocked" mode by varying its position next to the RC with a long cable. It changed red arrow orientation depending on cell phone alignment (portrait or landscape) and how how close it came to the underside of the RC. The Hauwei cells did not show much of a red arrow orientation change when put on the long cable and brought near the RC unit.
I think the above is a very SUCCINCT and COMPLETE description of my devices, methods tested, and results. I have some video of the cell phone screen, but what I need is two persons doing video of cell phone, drone, and
goggle images for their orientation. My wife has no clue how to capture video with zoom and pan. So I am limited in the "full operation" videos I can present.
tjcooper