At the GSMA Mobile World Congress 2012 in Barcelona, Rohde & Schwarz demonstrated the R&S®VTE video tester and R&S®VTS compact video tester, its new test platforms for development, quality assurance and manufacturing applications. Protocol layer measurements and media content check are performed on mobile high definition link (MHL) interfaces. MHL is the new leading audio/video interface on mobile devices. Besides interoperability measurements, application tests such as video over LTE end-to-end performance testing are also addressed.