Sony Xperia SP

Find "Configure Wi-Fi hotspot"

Slide your finger down the display starting from the top edge of your phone.
Press the settings icon.

Find "Configure Wi-Fi hotspot"

Press More....

Find "Configure Wi-Fi hotspot"

Press Tethering & portable hotspot.

Find "Configure Wi-Fi hotspot"

Press Portable Wi-Fi hotspot settings.

Find "Configure Wi-Fi hotspot"

Press Configure Wi-Fi hotspot.

Select settings for Wi-Fi hotspot

Press the field under "Network SSID" and key in the required name for the Wi-Fi hotspot.

Select settings for Wi-Fi hotspot

Press the drop down list under "Security".

Select settings for Wi-Fi hotspot

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

Select settings for Wi-Fi hotspot

If you want to password protect your hotspot:
Press WPA2 PSK.

Select settings for Wi-Fi hotspot

Press the field below "Password" and key in the required password.

Select settings for Wi-Fi hotspot

Press Save.

Turn on Wi-Fi hotspot

Press the return icon.

Turn on Wi-Fi hotspot

Press Portable Wi-Fi hotspot until the function is turned on.

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.