Coming from Vuforia I'm trying to get ARFoundation (v3.0 preview 2) working with the LWRP (Unity 2019.2.2f1). This video and some of the comments were very helpful to a point… As you can see at 21:30 the "placement indicator" starts moving on the recongnized planes which just won't happen on my android device. According to the newest comments on youtube many other Android users are having the same problem with indicators being stuck at the devices starting position. Anyone fixed this problem yet?
Add visualization for planes and you will see if they are tracked or not. ARSessionOrigin must have a ARPlaneManager component, you can find the prefab for plane visualization in the AR Foundation samples.