To upscale content to 4K resolution on an LG TV, you can start by examining the HDMI ports on your TV. For 4K resolution, you'll need HDMI 2.0 ports or higher, as they have the necessary bandwidth to transmit high-quality signals. Ensure that your LG 4K OLED TV has at least one HDMI 2.0 or higher port available.
Next, when watching lower-resolution content like DVDs, cable TV channels, or Blu-ray movies on a 4K TV, your TV needs to scale the image to fit the full screen area. If your TV doesn't do this, you'll be left with black areas around the image and a smaller view. LG TVs usually perform 4K upscaling automatically, but you can still adjust the picture settings for different lighting environments and personal preferences. During the initial setup, choose Home Mode instead of Store Mode for more accurate and comfortable picture settings. Additionally, some LG TVs have preset picture modes to optimize the image based on the content being watched.