Appendix A. HID Over GATT Pairing
This appendix walks through how to pair and unpair your HID over a GATT peripheral with various central devices.
Open the Settings app (Figure A-1, left).
Go to Bluetooth (Figure A-1, right).
Ensure that Bluetooth is on, and touch the Arduino device. Select Pair when prompted (Figure A-2, left).
The device is now connected (Figure A-2, right).