You can make HTC Rhyme forget its pairing connection with another Bluetooth device.
Doing so may require you to enter or confirm a passcode again if you want to reconnect to the other device.
From the Home screen, press
, and then tap
Tap Bluetooth settings.
In the Bluetooth devices section, press and hold the device to unpair.
Tap Disconnect & unpair, or tap Unpair if the Bluetooth device is currently not connected to HTC Rhyme.