Casting from your phone to Chromecast works through the Google Home app or the Cast button built into compatible apps

To cast from an Android or iPhone, you need three things: a phone on the same Wi-Fi network as your Chromecast device, the Google Home app installed, and either the Home app or a Cast-enabled app open. The actual cast happens through a button — either the Cast icon in the app you're using, or the Cast Device option in Google Home. Your phone sends the stream to your Chromecast, then steps out of the way; you can lock your phone or switch apps without stopping playback.

The process takes seconds once everything is connected. You tap the Cast button, choose your Chromecast from the list, and the content appears on your TV. From that point forward, your phone is just a remote — the Chromecast pulls the video or audio directly from the internet or your home network, not from your phone's screen.

Key Takeaways

  • Your phone and Chromecast must be connected to the same Wi-Fi network before you can cast anything.
  • The Cast button appears inside apps like YouTube, Netflix, and Spotify, or you can cast any screen through the Google Home app.
  • Once casting starts, your phone becomes a remote control and can be locked or used for other tasks without interrupting playback.
  • If the Cast button does not appear, check that your app is up to date and that your phone and Chromecast are on the same network.

Casting from apps like YouTube, Netflix, and Spotify

Most streaming apps have a Cast button built in. In YouTube, tap the Cast icon (it looks like a rectangle with a Wi-Fi symbol) in the top right corner. In Netflix, tap the Cast icon in the top right as well. Spotify shows the Cast icon at the bottom of the now-playing screen. Once you tap it, a list of available Chromecast devices appears — select the one you want to use.

After you select your Chromecast, the content starts playing on your TV when ready. The app on your phone shows what's playing and gives you playback controls — pause, play, volume, and seek. You can minimize the app, lock your phone, or open another app entirely; the video or music continues on your TV without interruption.

Not every app supports casting. If you do not see a Cast button in an app you use regularly, check the app's settings or help section to confirm whether casting is supported. Older versions of apps sometimes lack the Cast button, so updating through your phone's app store may add it.

Casting your entire phone screen to Chromecast

If an app does not have a built-in Cast button, you can cast your entire phone screen instead. Open the Google Home app, tap the account icon in the top right, then select Cast my screen. Choose your Chromecast device from the list. Your phone's screen now appears on your TV, and anything you do on your phone shows up there as well.

Screen casting uses more of your phone's battery and can be slower than app-specific casting, because your phone is sending everything it displays rather than just a video stream. It works well for showing photos, browsing websites, or using apps that do not support casting natively. To stop, open Google Home again and tap Stop casting.

Making sure your phone and Chromecast are on the same network

The most common reason casting fails is that your phone and Chromecast are not connected to the same Wi-Fi network. Check your phone's Wi-Fi settings and confirm you are connected to the same network name (SSID) as your Chromecast. Your Chromecast's network name appears in the Google Home app under the device settings — look for the Wi-Fi network listed there.

If you have a 5 GHz and 2.4 GHz network with the same name, your phone might connect to one while your Chromecast connects to the other. Some phones and Chromecast devices handle this automatically, but older devices sometimes do not. If casting is unreliable, try connecting your phone to the same band your Chromecast uses — you can check this in the Google Home app under your Chromecast's device settings.

Troubleshooting when the Cast button does not appear

If you do not see a Cast button in an app, first check that both your phone and the app are up to date. Open your phone's app store, search for the app, and install any available updates. Then close the app completely and reopen it. The Cast button often appears after an update.

If the button still does not show, confirm that your phone and Chromecast are on the same Wi-Fi network. Restart your Chromecast by unplugging it for 10 seconds, then plugging it back in. Restart your phone as well. These steps clear temporary connection issues that sometimes hide the Cast button.

If you are trying to cast from a web browser on your phone, note that browser casting works differently than app casting. Chrome on Android supports casting through the menu button (three dots), but Safari on iPhone does not have built-in casting — you would need to use screen casting instead.

Controlling playback while casting

Once casting is active, your phone becomes a remote. The app shows playback controls: play, pause, volume, and a seek bar to jump forward or backward. You can also control volume through your phone's physical volume buttons. If you want to stop casting, tap the Cast button again and select Stop casting, or straightforward close the app.

Some Chromecast devices also respond to voice commands through Google Assistant. If your Chromecast is set up with a Google Home speaker or display, you can pause, play, or adjust volume by speaking to the speaker instead of using your phone.

Casting audio to Chromecast speakers and displays

Chromecast devices designed for audio — like Google Home speakers and some third-party speakers with Chromecast built in — work the same way as video Chromecast devices. Open Spotify, YouTube Music, or another audio app, tap the Cast button, and select your speaker. The music plays through the speaker instead of your phone's speaker.

Chromecast with Google TV and other video devices also play audio, so you can cast music to your TV's speakers if you want. The process is identical: tap Cast in the app and choose your device. When you are done, tap Cast again and select Stop casting.

Frequently Asked Questions

Can I cast from an iPhone to Chromecast?

Yes. iPhone supports casting through most major apps like YouTube, Netflix, Disney+, and Spotify. The Cast button appears in the same location as on Android. Some apps may have slightly different layouts, but the process is the same: tap Cast, choose your device, and playback starts on your TV.

What happens if I close the app while casting?

Closing the app stops casting when ready. The content disappears from your TV. If you want to pause instead of stopping, use the pause button in the app or on your TV remote rather than closing the app.

Can I cast from two phones to the same Chromecast at the same time?

No. Only one device can cast to a Chromecast at a time. If a second phone tries to cast, it will take over and stop the first cast. Some Chromecast devices allow you to queue content, but only one source plays at a time.

Does my phone need to stay connected to Wi-Fi while casting?

Your phone needs to be on the same Wi-Fi network when you start casting, but it can move to a different network afterward without stopping playback. However, if your phone loses Wi-Fi entirely, casting will stop. For uninterrupted playback, keep your phone on the same network as your Chromecast.

Why does casting sometimes lag or stutter?

Lag usually means your Wi-Fi signal is weak or your network is congested. Move your phone or Chromecast closer to your router, or reduce the number of devices using Wi-Fi. Restarting your router can also help. If the problem persists, try casting at a different time when fewer devices are connected.