On the Oppo smartphone, ColorOS allows us to install certain apps such as Messenger, WhatsApp, Facebook and many more a second time. the cloning app works completely independently of the original app. For example, on dual SIM devices, it is possible to run WhatsApp with two accounts/phone numbers.

Dual apps can be installed a second time using the "App Cloner" function.

Android 10 (ColorOS 7.0)
Step 1:  Open the  Settings
Step 2:  Tap on  App cloner
Step 3:  Choose desired  App
Step 4:  Enable or Disable  Clone App
  1. Open the Settings
  2. Tap on App cloner
  3. Choose desired App
  4. Enable or Disable Clone App

Oppo Instructions