If a Bluetooth device is no longer needed, the pairing can be cancelled, which means that a new connection is necessary to start a transfer again.

Android 10 (ColorOS 7.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Bluetooth
Step 3:  Tap on desired  Bluetooth Connection
Step 4:  Tap on  Unpair
  1. Open the Settings
  2. Tap on Bluetooth
  3. Tap on desired Bluetooth Connection
  4. Tap on Unpair

Oppo Instructions
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