Oppo
Turn Wi-Fi On or Off auf Oppo
Wi-Fi on an Oppo phone is controlled by a single system radio that connects to your home router as well as private and public hotspots. When that radio is off, the phone shows no available networks at all, even if your router is working fine. This is different from a single network refusing to connect, which usually points to a password or router issue instead.
The control sits in the network settings, not inside an individual app. To switch it, go to Tap on Settings ➔ Tap on Wi-Fi ➔ Enable or disable Wi-Fi. The toggle at the top of that screen turns the radio fully on or off.
Turning Wi-Fi off is useful when you want to force the phone onto mobile data, save a bit of battery on a long trip, or stop it from auto-joining a weak network nearby. Turning it back on brings back the list of remembered and available networks immediately.
If Wi-Fi is already on but a specific network still fails, the fix usually lies elsewhere: forgetting that network, checking the router, or restarting the connection rather than the whole radio. Disabling and re-enabling Wi-Fi mainly resolves cases where the phone seems stuck, shows no networks, or ignores new hotspots until the radio is reset.