From the Settings app, tap Connections.
Tap Tethering & Mobile Hotspot.
Tap Mobile hotspot.
Tap Set up Mobile Hotspot.
This screen lets you choose the type of security you want. You can also find your device password here.
Tap the Security dropdown.
Select your security preference.
Tap the Password field.
Enter your new password.
Tap SAVE.
To enable your hotspot, tap or slide the Mobile Hotspot switch to ON.
You've completed the steps!
