Offline Maps and Home Point not setting when not having internet or data connection

conchman · Oct 15, 2018

I have 2 Mavic Pros and both do not set home point and they give me a black box in the map window, not even the flight track line. This happens when I have no internet or phone data connection, despite having the map downloaded offline. What am I doing wrong? I have updated the Go4 app. I also had gimbal issues and the app froze on last flight without data connection. In addition, it takes a while for the phone to connect to the app. I tried both the small cable and the USB cable. Same results. I never tried turning off wifi or flying in airplane mode, could that make it work somehow? Thanks for any help.

Mossiback · Oct 15, 2018

Flying in airplane mode turns off wifi which frees up some processing cycles on your device. What are you using as a display device?

sparkorc · Oct 15, 2018

If you shut down the Go4 app after downloading the maps you will lose the maps that you have cached.

conchman · Oct 15, 2018

Mossiback said:
Flying in airplane mode turns off wifi which frees up some processing cycles on your device. What are you using as a display device?

Galaxy S9+

conchman · Oct 15, 2018

sparkorc said:
If you shut down the Go4 app after downloading the maps you will lose the maps that you have cached.

Thanks for the tip, you would think that's an easy fix for DJI. I will try it. I wonder why I had those other issues during same flight. I flew in Greece a few months ago without wifi/data and got my first app/crash - disconnect.

conchman · Oct 15, 2018

I also have a Nvidea Shield, I may try flying without data connection to see if I have same issues.

conchman · Oct 15, 2018

sparkorc said:
If you shut down the Go4 app after downloading the maps you will lose the maps that you have cached.

So I have to keep device turned on and Go4 app running the whole time? Or just not log out/close app?

Mossiback · Oct 16, 2018

conchman said:
So I have to keep device turned on and Go4 app running the whole time? Or just not log out/close app?

I think the problem with losing maps is with iDevices. Android devices use the cached maps saved on the device. At least mine does.

rickw · Oct 16, 2018

I'm pretty sure S9+ is android,lol

sparkorc · Oct 16, 2018

I was refering to a ipad mini 4 tablet which has no gps and wifi only to cache maps in the background you just leave the go4 app running in the background to avoid losing the maps before you fly, if you are using a galaxy S9 (android) because it has a built in gps you don't have to cache maps the same way as a ipad with wifi only, but those with a ipad with wifi only version that is how its done, and thats the way I download the maps for the area I'm flying in.

Here one that covers a Android tablet or phone.

conchman · Oct 16, 2018

I wonder if this would fix the home point issue too

Meta4 · Oct 16, 2018

conchman said:
I have 2 Mavic Pros and both do not set home point and they give me a black box in the map window, not even the flight track line. This happens when I have no internet or phone data connection/QUOTE]
If you have GPS your Mavic will be recording a home point.
Your recorded flight data would confirm that you have a homepoint recorded.
Does your app display show a distance?
That's the distance from the recorded home point.
Without a home point, you can't have a distance showing.

Phone and/or internet access makes no difference to GPS and recording of the home point.