On Android, open Settings
Tap Network & internet or Connections
Tap Wi-Fi
Tap the connected network or saved network
Tap Share or QR code
Authenticate with fingerprint, PIN, or password
View the Wi-Fi password shown under the QR code
On iPhone, open Settings
Tap Wi-Fi
Tap the connected network
Tap Password or the info icon if available
Authenticate with Face ID, Touch ID, or passcode
View the saved Wi-Fi password if your iPhone version supports it
On Android, use Google Password Manager if the Wi-Fi password is saved there
On iPhone, check iCloud Keychain on a Mac if the password is synced there
If the password is not visible on the phone, check the router label
If needed, log in to the router admin page from the phone browser
If you do not have access, ask the network owner for the password