If a router with WPS is available, we can do without entering the password by pressing the WPS button. As soon as we have switched the Oppo-Smartphone into "WPS-Mode", it only needs to press the WPS button on the router. Shortly afterwards a WLAN connection is established.

Android 10 | ColorOS 7.0
Step 1:  Open the  Settings
Step 2:  Tap on  Wi-Fi
Step 3:  Tap on  Advanced settings
Step 4:  Tap on  WPS connection
  1. Open the Settings
  2. Tap on Wi-Fi
  3. Tap on Advanced settings
  4. Tap on WPS connection

Oppo Instructions