The OnePlus smartphone can automatically enable WiFi if it is located near a known WiFi network and the reception or signal strength is good.

Android 10 | OxygenOS 10.0
Turn on Wi-Fi automatically -  Open the  Settings
Turn on Wi-Fi automatically -  Tap on  Wi-Fi & network
Turn on Wi-Fi automatically -  Tap on  Wi-Fi
Turn on Wi-Fi automatically -  Tap on  Wi-Fi preferences
Turn on Wi-Fi automatically -  Enable or disable  Turn on Wi-Fi automatically
  1. Open the Settings
  2. Tap on Wi-Fi & network
  3. Tap on Wi-Fi
  4. Tap on Wi-Fi preferences
  5. Enable or disable Turn on Wi-Fi automatically

OnePlus Instructions
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