Open the Settings app
Tap Wi-Fi
Tap the connected network or the network name you want to check
Tap Password
Authenticate with Face ID, Touch ID, or your passcode
View or copy the saved Wi-Fi password
If Password is not shown, go to Settings
Tap Passwords
Authenticate with Face ID, Touch ID, or your passcode
Search for the Wi-Fi network name
Tap the network entry to view the saved password