A:AnswerThere are a lot of folks out there that insist standard high speed HDMI works fine with 4K and that a special 4K cable is not required in most instances. Depends on length of cable too.
A:AnswerYou can choose the brightness of the colors in the picture in the settings with the remote..hit the home button and then arrow up to the settings gear icon and click thru the picture displays till you find the one you like best.
A:AnswerA "smart" remote can "learn" the signals from other remote controls. If it's not a smart remote it can only be used for devices that are already pre-programmed into it. If you have an older (or a very new or obscure brand) of DVD player or TV, you are less likely to be able to control it with a remote that can't "learn" from the device's original remote.