From the Settings app, tap Network & Internet.
Tap Hotspot & tethering.
Tap Wi-Fi Hotspot.
Tap or slide the Use Wi-Fi hotspot switch to On.
The Configure screen lets you choose the type of security you want. You can also find your device password here.
Tap Security.
Select your security preference.
Tap the Back icon.
Tap Hotspot password.
Enter your new password.
Tap OK.
You've completed the steps!
