У вашего броузера проблема в совместимости с HTML5
Today T-Mobile has shake up the industry by offering something that no other carrier is offering, T-Mobile is allowing their customers to stream videos and it does not count against your data. As long as you are using the streaming apps that T-Mobile has approved it will not use your data plan. Here is link that will show what apps that T-Mobile has approved. After you go to the website all you have to do is click on "See list of all streaming services"
http://www.t-mobile.com/offer/binge-on-streaming-video.html?icid=WMM_TM_Q415BNGONU_307RH9T7AUR3351