Service Mobile at reduced prices Last update on 29-01-2013 Mobile at reduced prices Execute service online Information and ability to carry out the online application to the TMN tariff directed to youth organizations. Read more When At any time. Competent authorities Portuguese Institute of Sport and Youth The information presented is the responsibility of the competent authorities. The contents were translated automatically by use of a tool that is not perfect in all situations. Please refer to the terms and conditions of the portal.