Use the airline app.
The app is clearer, won't get lost, and updates as gate and flight information changes. On the better apps, you can subscribe to push notifications of gate changes and other very important updates. On United's app, for example, not only do you get notifications of changes, you can track your checked bags, see where the inbound airplane is coming from, and the airport map will show flags for your arrival and departure gates, and if it all goes sideways, you can see your options, rebook, change flights, all from the app, without waiting in line at customer service, or holding for the next available agent.
Watch the million mile flyers. Not one of them uses paper...
I see* poor, lost, confused people in the airport every day, clutching a crumpled piece of paper in their hand, wondering where to go...
Because in the several hours since that piece of paper was printed, the situation has changed.
Don't be one of those people...
* Yes. I stop and help them. And I help them by pulling out my phone and using the app...it's both tutorial and help at the same time...