A:AnswerI believe it adjusts itself to whatever is plugged in, even if it's not a 4k content it will try to upscale it 4k, if it can't it will go to 1080p
A:AnswerHi HappyTVer, please reach us at [email protected] with your concern so we can further assist you. Please also include the devices connected to your TV and the type of connections you're using. Thanks! ^Ron
A:AnswerI get that sometimes, I just turn it off and restart, this occurred with my other TV as well as most others connected to cable it sometimes can't read the signal,