Track elevation wrongly recorded as near constant
I have the latest version of Locus Map Pro.
I recorded a track where we did a loop track up to summit and back down. The elevation changes is about 1000m. This is on a new Samsung Note20.
The problem is that the track elevations shown in the elevation graph are nearly constant and the height is around the starting elevation ~340m. The statistics page also shows 0 gained elevation. The rest of the track (2d locations) worked fine, so I get a nice outline of the track on the map.
I did export the track to GPX format and had a look at the elevation values and they are all constant.
Any idea of what might have gone wrong?
Might this be a problem with the Note20?
I have used track recording successfully on my previous phone.
Any help would be appreciated.