WE have owned the Kevo for over a year now. My wife and I both have android phones so we are using the key fobs. For the most part we use the lock as a deadbolt with the house key as the fobs are very unreliable. We are constantly changing batteries but they don't seem to last very long. We are very disappointed so far escpecially for the cost of the unit. Could have bought a regular deadbolt much cheaper.