The fastest way to get YouTube on your TV screen

The simplest method is casting—sending video from your phone to a TV that's on the same Wi-Fi network. You open YouTube on your phone, tap the cast icon (it looks like a rectangle with a curved line in the corner), select your TV from the list, and the video plays on the big screen while you control it from your phone. Your phone acts as a remote, not a cable.

This works on any TV with a built-in Chromecast, a Fire TV device, a Roku, or an Apple TV. If your TV is older and doesn't have one of these, you can buy a separate casting device—a Google Chromecast, Amazon Fire TV Stick, or Roku Streaming Stick—and plug it into an HDMI port on the back of the TV.

Key Takeaways

  • Casting sends YouTube from your phone to your TV wirelessly using the cast icon in the YouTube app, and both devices must be on the same Wi-Fi network.
  • Most modern TVs have casting built in, but older TVs need a separate device like a Chromecast, Fire TV Stick, or Roku plugged into an HDMI port.
  • After casting starts, your phone becomes a remote—you can pause, skip, adjust volume, and lock the screen without interrupting playback.
  • If casting doesn't appear as an option, restart both your phone and TV, check that they're on the same Wi-Fi network, and make sure the YouTube app is up to date.

How to cast from an Android phone

Open the YouTube app and find the video you want to watch. In the top right corner of the screen, you'll see the cast icon—a small rectangle with a curved line in the corner. Tap it. A menu will appear showing all the devices on your Wi-Fi network that can receive video.

Select your TV from the list. YouTube will start playing on the TV, and your phone screen will show a smaller version of the video with playback controls. You can now use your phone to pause, play, skip forward or backward, adjust volume, and change the video—all without touching the TV remote. If you want to stop casting, tap the cast icon again and select "Stop casting."

How to cast from an iPhone

The process is nearly identical on iPhone. Open YouTube, find your video, and look for the cast icon in the top right corner of the screen. Tap it and select your TV. The video will play on your TV, and your iPhone becomes the remote.

If you don't see the cast icon, make sure your iPhone and TV are connected to the same Wi-Fi network. The icon only appears when a compatible device is available on your network. If you've just set up a new TV or casting device, give it a minute to show up in the list.

Setting up a casting device if your TV doesn't have one built in

If your TV is more than five or six years old, it probably doesn't have casting built in. You'll need to add one. The three most common options are Google Chromecast, Amazon Fire TV Stick, and Roku Streaming Stick. All three plug into an HDMI port on the back or side of your TV and cost between $30 and $50.

Plug the device into an available HDMI port, then plug its power cable into an outlet or USB port on the TV (most modern TVs have a USB port that can power these devices). Turn on the TV and switch to the HDMI input where you plugged in the device. Follow the on-screen setup instructions—you'll connect it to your Wi-Fi network and sign in with a Google, Amazon, or Roku account. Once setup is complete, the cast icon will appear in your YouTube app on your phone.

Troubleshooting when the cast icon doesn't appear

The most common reason the cast icon is missing is that your phone and TV aren't on the same Wi-Fi network. Check your phone's Wi-Fi settings and make sure you're connected to the same network name (SSID) as your TV. If your home has a 2.4 GHz and 5 GHz network with different names, try connecting your phone to whichever one your TV is using.

If they're on the same network and the icon still doesn't show, restart both your phone and your TV. Turn off your phone completely, wait 10 seconds, and turn it back on. Do the same with the TV or casting device. Then open YouTube again. If the icon still doesn't appear, make sure the YouTube app is fully up to date by checking your phone's app store.

If you're using an older casting device, it may not support the current version of YouTube. Check the manufacturer's website to see if a firmware update is available for your device. Most casting devices can update themselves automatically if you leave them plugged in and connected to Wi-Fi.

What to do if casting keeps disconnecting

If the video starts playing on your TV but then stops or disconnects after a few minutes, the problem is usually a weak Wi-Fi signal. Move your phone closer to the router or TV, or move the router itself to a more central location in your home. If your router is in a closet or far from where you watch TV, that's often the culprit.

Another common cause is interference from other devices. Microwaves, cordless phones, and baby monitors can interfere with Wi-Fi on the 2.4 GHz band. If your router supports it, try switching your phone and TV to the 5 GHz network, which is less crowded. You can usually do this in your router's settings or by connecting to a separate network name that ends in "-5G."

Using your phone as a remote while casting

Once casting is active, your phone screen shows the video thumbnail, the title, and a set of controls. You can tap the play and pause buttons, use the progress bar to skip to any point in the video, and adjust volume with your phone's volume buttons. The TV remote becomes unnecessary—everything happens through your phone.

You can also lock your phone screen while casting continues. The video will keep playing on your TV even if your phone goes to sleep or you open another app. To resume control, just unlock your phone and open YouTube again. The cast connection stays active until you manually stop it or close the YouTube app.

Frequently Asked Questions

Do I need a cable to connect my phone to my TV?

No. Casting is wireless and uses Wi-Fi. If you want a wired connection, you can use an HDMI adapter cable, but casting is simpler and doesn't require your phone to stay plugged in or positioned near the TV.

Can I use YouTube on my phone while casting to the TV?

Yes. Once casting starts, you can open other apps, browse the web, or even lock your phone. The video continues playing on your TV, and you can unlock your phone anytime to adjust playback or switch videos.

What if my TV is too old to have casting and I don't want to buy a device?

You can use an HDMI adapter cable to connect your phone directly to the TV. Android phones use USB-C or Micro-USB adapters, and iPhones use a Lightning to HDMI adapter. This requires your phone to stay plugged in and positioned near the TV, but it works on any TV with an HDMI port.

Will casting work on a hotel or public Wi-Fi network?

Usually not. Casting requires your phone and TV to be on the same network, and most public networks block the connection between devices for security reasons. You can use a wired HDMI adapter instead, or some hotels have smart TVs with built-in apps where you can sign into YouTube directly.

Can multiple people cast to the same TV at the same time?

Most casting devices only allow one active cast connection at a time. If someone else tries to cast while you're already casting, their video will take over. Some newer devices have a queue feature that lets you add videos to a playlist, but only one person controls playback at a time.