A way to measure success in post smartphone era weekends is to ask:

How many times did you forget where your smartphone was? 

On some particularly memorable weekends, I found myself completely disinterested in my phone for long periods of time.

As a result, I have started beginning weekends by placing my phone in inconspicuous locations around the house [e.g. under the pillow].

The more obscure the place, the fewer often I check it, and the better the weekend is going to be for it.