Motorola H710 User Manual page 18

The phone lists Bluetooth devices it finds.
b Select Motorola H710.
c Select OK or Yes.
Your headset is now connected to both phones. The last paired phone (your
second phone) is now your primary phone for voice dial functionality.
After you have successfully paired both phones with your headset, you don't
need to repeat these steps. For daily use, ensure that your headset is turned
ON and that your phone's Bluetooth feature is ON.
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