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To connect a phone to a TV with USB-C to HDMI, first confirm that your exact phone model supports wired video output. Then connect a compatible USB-C-to-HDMI cable—or a USB-C-to-HDMI adapter and standard HDMI cable—select the matching HDMI input on the TV, and approve any prompt on your phone. A USB-C port alone does not guarantee video output.

Check whether your phone supports USB-C video output

Phone makers do not enable wired video output on every USB-C phone. Check the support page or manual for your exact model and look specifically for external display, wired display, HDMI output, or DeX support. Do this before buying a cable: an adapter cannot add video-output capability that the phone lacks.

These manufacturer-documented examples show why the model matters; they are not a complete compatibility list:

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  • Google Pixel: Google documents wired display output for Pixel 8 and later. Google Pixel Help: connect your Pixel to a display.
  • Apple iPhone: Apple lists USB-C external-display support for iPhone 15 models, iPhone 16 models except iPhone 16e, iPhone 17 models except iPhone 17e, and iPhone 18 Pro models. Check Apple’s current iPhone connection guidance because eligibility can change with new releases.
  • Samsung Galaxy: Samsung’s 2024 manuals document wired DeX connections for the Galaxy S23 series and Galaxy Z Fold6. They do not establish that every Galaxy with USB-C supports wired DeX. See the Galaxy S23 series manual and Galaxy Z Fold6 manual.

Choose a cable or adapter

You can use either a USB-C-to-HDMI cable, with USB-C at the phone end and HDMI at the TV end, or a USB-C-to-HDMI adapter plus an ordinary HDMI cable. A single cable has fewer connections; an adapter may be more useful if you already own an HDMI cable or need a multiport adapter. Apple documents a compatible multiport adapter option for supported iPhones, but charging support varies by accessory and phone—do not assume every HDMI adapter can charge your handset.

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If resolution or HDR matters, check the capabilities of all three parts of the chain: phone, cable or adapter, and TV. The highest advertised capability of one component does not override the limits of another. For supported iPhone configurations, Apple says an HDMI 2.0-compatible cable or adapter can output up to 4K at 60 Hz; actual results depend on the connected display and accessory. Apple also says HDR10 or Dolby Vision can be included when the display supports HDR. These are Apple’s capability statements, not a guarantee for every phone or TV.

Connect the phone to the TV

  1. Confirm wired video support for the exact phone model and prepare the compatible cable or adapter.
  2. Plug the HDMI end into an available port on the TV. If you are using an adapter, connect the HDMI cable to the adapter first.
  3. Connect the USB-C end to the phone. Google’s Pixel instructions start by connecting the display cable to the display device, then to the phone.
  4. Use the TV remote to select the HDMI input matching the port you used if the TV does not switch automatically.
  5. Accept the on-screen prompt, if one appears. Google Pixel users may need to select “Mirror display”; on the Samsung devices covered by its cited DeX manuals, tap “Start” to begin DeX.

What you will see on the TV

Screen mirroring

On supported Pixel phones, the wired connection can mirror the full screen. Google also describes projecting Google Slides while keeping speaker notes on the phone; it warns that this presentation behavior may not work with other third-party apps.

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iPhone external display

Apple says a connected display mirrors the iPhone screen except when an app provides a second-screen experience, such as some video apps. The displayed result can therefore depend on the app as well as the connection.

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Samsung DeX

On the Samsung models covered by the manuals, DeX shows a desktop-like interface on the TV while the phone remains usable. Samsung notes that some apps and features may not be available in DeX, and advises using supported accessories.

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Fix a blank screen, missing audio, or an app that will not play

The TV shows no picture

  • Recheck that the exact phone model supports wired display output.
  • Reseat both ends of the connection and verify that the TV is set to the HDMI input connected to the cable.
  • Test the HDMI cable with another known-working setup if available. Apple also recommends checking the cable and reconnecting the adapter.
  • If you have extensions or converters in the chain, remove them and connect directly where possible. Apple advises against HDMI/VGA extension cables and converters in its adapter setup; it also says adapters that convert those signals to DVI, composite, or component are not compatible with that setup.

Picture appears, but audio does not

For Apple’s adapter setup, use a Digital AV adapter with HDMI. VGA does not carry audio, so an older VGA connection will not send sound to the TV through that cable.

Only one video or streaming app fails

The connection may work while a particular app blocks or does not support external playback. Apple notes that some films, TV shows, and streaming apps require HDCP protection; a digital connection that is not HDCP-compatible can trigger an alert. Check the app’s own external-display support and use a compatible HDMI connection rather than assuming the phone or TV is faulty.

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DeX does not start

For the Galaxy models covered by Samsung’s manuals, connect the supported USB-C-to-HDMI adapter and HDMI cable, then tap “Start” on the phone. Some apps or features may be unavailable in DeX.

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