To change HDMI on a Vizio TV, press the INPUT button on your remote, then select the HDMI source that matches the port your device is connected to, such as HDMI-1 or HDMI-2. This is the quickest way to switch between a cable box, gaming console, streaming stick, or any other device plugged into your TV.
How to change HDMI on Vizio TV using your remote
The fastest method for switching inputs is your Vizio remote. Locate the INPUT button, which is typically positioned near the top or in the center of the remote's keypad. Press it once to bring up the input list on your screen. The list will show every available source, including all HDMI ports and any built-in apps. Use the arrow keys to highlight the correct HDMI source, then press OK or Select to confirm. This saves a step and makes the switch more intuitive, especially if you have multiple devices connected across the HDMI ports on a TV.
Remember that the input you choose must match the physical port you used. If your streaming device is plugged into the port labeled HDMI-2, you must select HDMI-2 on the input list. Selecting HDMI-1 will show a blank screen because no device is sending a signal there. If you are unsure which port a device uses, trace the cable from the device to the back or side of the TV, or check the port labels printed near the connectors.
Change the HDMI input with the Vizio mobile app
If you cannot find the remote or it is out of batteries, you can switch inputs using the official VIZIO mobile app on your smartphone. Download the app from your phone's app store, then connect your phone to the same Wi-Fi network as your Vizio TV. The app will detect your TV automatically once both devices are on the same network. Open the app, select your TV from the device list, and look for the input or source control option. From there, you can tap the HDMI input you want to switch to, and the TV will change immediately. The app also lets you adjust volume and access other basic controls, so it works as a full remote replacement in a pinch. This method is especially useful if you have misplaced the remote or if the TV is mounted in a spot where the remote sensor is blocked. If you own a different brand, you can similarly change HDMI on LG TV models using their dedicated ThinQ app.
When you need to physically swap an HDMI cable
Sometimes "changing HDMI" means swapping the cable itself, for example, if you bought a longer cable, a higher-speed cable for 4K content, or if you are moving a device from one port to another. In that case, start by turning off the TV and unplugging it from power for safety. Locate the HDMI port on Vizio TV by checking the back, side, or bottom edge of the panel; the ports are usually grouped together and labeled clearly. Gently grasp the old cable's connector, not the wire itself, and pull it straight out. Align the new cable's connector with the port, noting that one side of the connector is wider than the other, and push it in firmly until it clicks or sits flush. If your TV has a screw-down collar on the port, tighten it to secure the cable. Plug the other end into your device, then plug the TV back in and power it on. Select the corresponding HDMI input using the remote or app, and verify that the picture and audio come through correctly.
Troubleshooting HDMI input issues on a Vizio TV
Double-check that the cable is fully inserted on both the TV and the device, loose connections are the most common cause of signal loss. Try unplugging the cable from both ends and reinserting it firmly. If the problem persists, test the device on a different HDMI port on the TV, or test a different cable if you have one available. Also confirm that the connected device is powered on and not in standby mode. Some devices, like streaming sticks, draw power from the TV's USB port; if that port is not providing power, the device may not turn on at all.
One common point of confusion involves Vizio's Smart TV features. On newer Vizio TVs, a Walmart account is required to access built-in apps and Smart TV features. However, you do not need to sign in to use HDMI inputs or the antenna input. If you are trying to watch content from a cable box, game console, or streaming device connected via HDMI, you can ignore the Walmart account prompt entirely, just select the correct HDMI input and your device will work normally. The account requirement only applies to the TV's own app store and streaming services. If you are having trouble with the TV's Wi-Fi connection or app functionality, that is separate from HDMI switching and may require checking your network settings or the connection between your TV and router.
