@Hallcs wrote: If you uninstall samsung pay app from your phone, smart lock will work after reboot. Samsung pay seems to disable smart lock for added security. If you use samsung pay you will have to live with the intermitten problems with smart lock. It's only pay app you need to uninstall. I was having the same issue with my Galaxy A8. Stopping Samsung Pay which I don't use has resolved the problem. Hopefully this lasts.
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