Motorola H790 Quick Start Manual page 7

pair & connect
Follow voice prompts to connect your phone to your headset.
When your headset successfully pairs with your phone, you hear "pairing complete".
When connected, you hear "phone 1 connected" and see the indicator light rapidly
flash in blue and purple.
To connect to both phones, simply turn on the first phone while the second phone
is connected. When you hear "phone 2 connected", your headset is connected
to both phones. The last paired phone (your second phone) is now your primary
phone (or "phone 1") for voice dial functionality.