S7 edge keeps freezing on Lock Screen

[Android Central Question]

My Samsung Galaxy S7 Edge periodically freezes on the Lock screen for no apparent reason. Every now and then I'll look at it and realize the time it's displaying is not current, at which point it becomes completely unresponsive. Then the only way to bring the phone back to life is to a hard reset. It's done this on and off since the day I bought it and, because I'm no longer in the country where I bought it (NZ), Samsung won't do anything about it. Anyone had this issue before?

 

[B. Diddy]

Welcome to Android Central! How frequently does this happen? If it's fairly often, see if it still happens in Safe Mode: https://support.t-mobile.com/docs/DOC-28008. You can also try wiping the cache partition: https://support.t-mobile.com/docs/DOC-28028