See -> Recommended settings for Wi-Fi routers and access points
Recommended settings for Wi-Fi routers and access points - Apple Support
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Hidden network
Set to Disabled
A router can be configured to hide its network name (SSID). Your router might incorrectly use “closed” to mean hidden, and “broadcast” to mean not hidden.
Hiding the network name doesn't conceal the network from detection or secure it against unauthorized access. And because of the way that devices search for and connect to Wi-Fi networks, using a hidden network might expose information that can be used to identify you and the hidden networks you use, such as your home network. When connected to a hidden network, your device might show a privacy warning because of this privacy risk.
To secure access to your network, use the appropriate security setting instead.
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If you need help with your Wi‑Fi password
If you need help with your Wi‑Fi password – Apple Support (UK)
- You need to sign in to your router.
- The Wi-Fi network name, or SSID (service set identifier), is the name your network that has a password.
or If you have iOS 16 / iPadOS 16:
Go to -> Settings -> tap Wi-Fi -> tap on the hideen Password -> enter Passcode -> you will then see the Wi-Fi Password.