HTC One (M8)

Find "Portable Wi-Fi hotspot"

Slide two fingers down the display starting from the top edge of your phone.
Press SETTINGS.

Find "Portable Wi-Fi hotspot"

Press More.

Find "Portable Wi-Fi hotspot"

Press Mobile network sharing.

Find "Portable Wi-Fi hotspot"

Press Portable Wi-Fi hotspot.

Select settings for Wi-Fi hotspot

Key in the required name for the Wi-Fi hotspot.
Press the menu icon.

Select settings for Wi-Fi hotspot

Press Advanced.

Select settings for Wi-Fi hotspot

Press SECURITY.

Select settings for Wi-Fi hotspot

If you don't want to password protect your Wi-Fi hotspot:
Press None.

Select settings for Wi-Fi hotspot

Press the return icon.

Select settings for Wi-Fi hotspot

If you want to password protect your Wi-Fi hotspot:
Press WPA2 (AES).

Select settings for Wi-Fi hotspot

Press the return icon.

Select settings for Wi-Fi hotspot

Press the field below "PASSWORD (8-63 ASCII CHARACTERS)" and key in the required password.

Turn on Wi-Fi hotspot

Press the indicator next to "Portable Wi-Fi Hotspot" until the function is turned on.

Turn on Wi-Fi hotspot

Press OK.

Establish connection

Do the following on the device which is to connect to your Wi-Fi hotspot:
Turn on Wi-Fi.
Find the list of available Wi-Fi networks.
Select the network name you keyed in in step 2.
Key in the password you selected in step 2 and establish a connection to the Wi-Fi hotspot.
When the connection is established, you can access the internet from the other device.

Return to the home screen

Press the home icon to return to the home screen.