Realme
Add a Wi-Fi Network Manually auf Realme
A Wi-Fi network disappears from the scan list on a Realme phone mainly for one reason: the router hides its SSID broadcast instead of announcing it publicly. A weak signal or a router that just rebooted can cause the same effect for a short time. Manually adding the network works around this, because the phone stops waiting for a broadcast and connects directly with the details you type in.
Open Tap on Settings ➤ Tap on Wi-Fi ➤ Tap on Manually add a network ➤ Enter the SSID/Password and tap on Save. The SSID has to match the router configuration exactly, including upper and lower case letters. If the network is secured, pick the correct security type used by the router; a wrong type blocks the connection even when the password is correct.
Manual entry only helps if the network itself is reachable and correctly configured on the router side. If the phone still fails to connect afterward, check whether the router broadcasts on a frequency band your device supports, or whether MAC filtering blocks unknown devices. For networks that are simply out of range, moving closer solves the problem faster than any manual entry.