Installed 11.1.36 on my Samsung S21+ and started it at my home office. For a minute I got the usual "No GPS lock" message, then, as usual it cleared. However, about 1 minute later and every minute or so for 3-4 minutes I got a "Weak GPS signal" message, which is something I've never seen before this. After that, those messages stopped, until, about 10 minutes later...
I took the phone to the car and drove to the grocery store. Wow. Bad.
At first, the plane icon would just make some random orientation changes, but never moving, though I had moved about 3/4 mile and made a turn. After about a mile it updated it's position, but the orientation was way off (boy, was I crabbing). Then it sort of tracked, both position and orientation, until the first long stop. At long stops it would randomly change orientation (not unusual), but also would change position (by hundreds of feet, which is unusual). Then it would track again when I moved -- but only after a very long lag of about 30 seconds. Then it wouldn't track for awhile at all. All along, the Weak GPS Signal message would keep popping up. Curiously, I think the altitude was tracking well, and frequently, but I can't swear to that -- I only thought to look at that during the last mile.