Xiaomi Redmi Note 9

Find "Set up portable hotspot"

Press Settings.

Find "Set up portable hotspot"

Press Connection & sharing.

Find "Set up portable hotspot"

Press Portable hotspot.

Find "Set up portable hotspot"

Press Set up portable hotspot.

Select Wi-Fi hotspot settings

Press SSID and key in the required name for the Wi-Fi hotspot.

Select Wi-Fi hotspot settings

Press Password and key in the required password.

Select Wi-Fi hotspot settings

Press Security.

Select Wi-Fi hotspot settings

Press WAP2-Personal to password protect your Wi-Fi hotspot.

Select Wi-Fi hotspot settings

Press the confirm icon.

Turn on Wi-Fi hotspot

Press the indicator next to "Portable hotspot" to turn on the function.

Return to the home screen

Press the Home key to return to the home screen.

Establish connection to Wi-Fi hotspot from another device

Turn on Wi-Fi on the other device.
Find the list of available Wi-Fi networks and select your own Wi-Fi hotspot.
Key in the password for your Wi-Fi hotspot and establish the connection.
When the connection is established, you can access the internet from the other device.