Samsung Galaxy MEGA 2 User Manual page 80

Delete a Paired Device (Unpair)
When you unpair from a Bluetooth device, the two
devices no longer recognize each other. To connect
again, you have to pair the devices.
1. Verify your Bluetooth is active.
2. From the Bluetooth settings page, tap
device, and then tap Unpair to delete the
paired device.
Settings 74 Bluetooth