If you want to use the Z-wave, you need a hub. I bought the SmartThings from Amazon (of course) for about $68 bucks. I already have the app in my Samsung phone, all I had to do is add the device (hub). As soon as I set up the hub, I was able to connect the lock in the app. Now I can lock/unlock via phone. This lock is also compatible w/Alexa.
https://www.amazon.com/Kwikset-888ZW500-Smartcode-Electronic-Technology/dp/B07BLJ38SJ

