Installation and setup were quite quick and easy. The lock usually works, but overall operation is slow and unreliable. I suggest keeping a key with you whenever you leave. The key fob has to be almost touching the lock to work, and, in two months, I have had to re pair it twice to work with the lock. When you unlock the door from the inside, you have to wait about 15-20 seconds before it will accept a "touch" to lock it. It's much faster. The app does not work with all android phones, not even some of the newer ones.