The easiest way to segment visitors by device type is to choose the condition while you’re setting up the Audience.
How to do it
1. While in the experiment editor, go to the Audience section.

2. Here you can find Segment (Targeted visitors) settings, which includes Select device type settings.

You have the possibility to segment by :
- All devices – will include desktop, laptop/notebook, tablet, mobile smartphone.
- Only desktop – includes only desktop and laptop/notebook.
- Only tablet – includes only tablets.
- Only mobile – includes only mobile smartphone.
Good to know
If you are running experiments and want to test them on a mobile device view, a very easy method to do this is by using the Developer Tools of the browser you are using.
For example, for Google Chrome browser you can either right click once you are on your website and select Inspect.

An alternative would be to press on the 3 dots button on the top right of your browser, go to More tools option, and select Developer tools.

Or you can access the Developer tools by either pressing F12 or Ctrl+Shift+I.
This will open up the Console. From here you can press the Toggle device toolbar button which change the view to a mobile version.

This is what the Mobile View will look like.

This is a very useful option for testing your experiments prior to releasing them to your website traffic.