Samsung Galaxy A71 works pretty good. I have a thin silicone case and I get good reads with it on, but better with it off of course. Antenna is located next to the camera block, but I find the best reads come from the highlighted blue zones, better if the x-series implant antenna is perpendicular to the antenna.
Tested with xFD, xLED, xNT, NExT, Spark2 + DT Diagnostic card