Think about the last time you watched YouTube. Was it on your phone or your TV? If it was the latter, you’re part of a growing trend. TVs are now the primary device for watching YouTube in the United States, according to the company’s annual letter. Viewers watch more than 1 billion hours of YouTube content daily on TVs. Smart TVs and app updates drive the shift Several factors are contributing to this trend. The rise of smart TVs, continuous app improvements, and a diverse content library have all made YouTube a dominant player in home entertainment. YouTube’s annual letter…