Is it possible for my Samsung Galaxy S6 to lock due to a malfunction with the phone or maybe a virus?

Phone locked 

I left my samsung s6 jn my gym locker, when i returned i was locked out as if someone tried to access my phone. I opened it with the backup password. Is it possible for my phone to lock due to a virus or a malfunction with the phone? 




Hi Tamera. Someone might have tried to access the phone.



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