Well I can honestly say that after 2 years, I have never had a problem getting the door locked. I will also say its 50/50 locking the door with my phone in the pocket. I often have to take my phone out and hold it to the lock.
But, what is more disappointing to me is lack of features in Kevo Plus. How could there not be rules, ifttt, or other functions to make my life easier. Kevo idea is great, but in order to do anything I need to interact with Kevo app. Doesnt make my life as easy as it could be.
jayserna about Kevo, v1.4.33