Open your phone’s Settings
Tap Network & Internet or Connections
Tap Hotspot & tethering or Mobile Hotspot
Tap Wi-Fi hotspot or Mobile Hotspot
Look for Hotspot password, Password, or Wi-Fi password
Tap the password field if it is hidden to reveal it
On iPhone, go to Settings
Tap Personal Hotspot
View the Wi-Fi Password
If needed, change the password from the same menu
If you cannot find it, check your carrier app or device manual