mkdocs-material/material/.icons/octicons/device-mobile.svg

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 10 16"><path fill-rule="evenodd" d="M9 0H1C.45 0 0 .45 0 1v14c0 .55.45 1 1 1h8c.55 0 1-.45 1-1V1c0-.55-.45-1-1-1zM5 15.3c-.72 0-1.3-.58-1.3-1.3 0-.72.58-1.3 1.3-1.3.72 0 1.3.58 1.3 1.3 0 .72-.58 1.3-1.3 1.3zM9 12H1V2h8v10z"/></svg>