I have a new Galaxy J7 Crown with the upgrade from Android 8.0 to 9.0 applied. Smart Lock / Trusted Places has worked only sporadically since day 1, never for more than 24 hours without a failure. Failures can be for long periods, currently it hasn't worked at all for 3 days. I've researched and tried ever tip to be found but I despair. One thing I've learned is that this problem is pervasive throughout the Galaxy product line. Sadly, Samsung doesn't appear responsive to the many complaining users. Please, Samsung, wake up and acknowledge the problem. Then tell us what you're going to do about it. Thank you.