Canon EOS REBEL T7I Wi-Fi (Wireless Communication) Function Instruction Manual page 13

Register [Nickname].
5
When the screen on the left appears,

press <0>.
 The screen on the left will appear.
When using the displayed nickname,

press the <M> button.
Otherwise, enter any characters

between 1 to 8 characters in length.
For instructions on entering
characters, see page 160. When you
finish entering, press the <M>
button.
Exit the setting.
6
When the screen on the left appears,

select [OK], then press <0>.
To return to the screen that appears

when the <k> button is pressed,
press the <M> button.
For information on each item on the

[Wi-Fi settings] screen, see page
159.
Setting Wi-Fi Settings
13