No, Smart IPTV application does not include any channels and no information will be provided about where you can get channels or channel packages.
Try example test list http://siptv.eu/lists/example.m3u (external URL) first, then then check your playlist for errors. Make sure your URL is a direct link, not a redirect and that it is currently online. You can also try downloading your playlist file by putting the playlist URL in the internet browser address field and use it as a static playlist at My list page.
Try example test list http://siptv.eu/lists/example.m3u first, then make sure all your stream links work (not dead) and codecs are supported by your TV. Every TV make and model are totally different and may or may not support specific stream formats: