Follow the steps:
1. Swipe down from the top of the screen to open the Action Center.
2.Tap “Expand.”
3.Verify the Bluetooth® tile is highlighted, if not, tap to highlight the tile and activate Bluetooth®.
4. Tap “Connect”. A list of devices will appear on the screen.
5. Select the name of your hearing aids from the list of available devices.
6. A connection beep will be heard in the paired hearing aid.
7. Your Windows 10 Mobile phone is now connected to your hearing aids.