In the case the controller isn’t connecting after pressing the buttons on it, you can unpair and repair the controller to the phone.

1. Go to the​ ​Oculus​ ​app
2. Click on More​ ​in the bottom right
3. Under the Connected​ ​Devices​ category click Controller
4. Hit Pair​ ​New​ ​Controller
5. Go through the calibration steps.
6. Inside VR hold down the Home​ button on the controller to recenter