Chrome, Edge, Opera
Open Settings (
F1
orShift+?
) > Devices > Click "Add custom device...".Enter the "Device Name" and other details associated with the device. Click the "Add" button.
Firefox
Open Responsive Design Mode (
Cmd+Opt+M
orCtrl+Shift+M
) > Select "Edit List..." from the list of devices.In Device Settings, click "Add Custom Device..." > Enter the Name and other related details > Click "Save".