How to set user-agent of a browser for execution as Mobile web?

Team, WebUI has one API setViewport which will give us execution environment of particular device view but how to set user-agent as mobile web browser using Katalon? As Selenium does not support a capablity to add user-agent in header of the browser while launching will this be possible in Katalon? Or just by setting view port is enough to simulate mobile web testing?

Have you solved it now:rofl: