How to Cast Amazon Prime Video to Chromecast from Phone

Can You Watch Prime Video on Chromecast? Understanding the Situation

For years, Amazon and Google were locked in a corporate dispute that left Chromecast users without official Prime Video support. That standoff is over, and today it's possible to use Prime Video on Chromecast in several different ways — though the level of simplicity varies considerably depending on the method you choose and your Chromecast model. The simplest and most efficient method is using the native cast icon inside the Amazon Prime Video app for iOS and Android, which streams video directly from Amazon's servers to the Chromecast with no intermediaries.

In this complete guide, you'll learn exactly how all three available methods work, when to use each one, and how to solve the most common problems — including the notorious case where the cast icon simply doesn't appear in the app.

Method 1 — Native Cast from the Prime Video App (The Right Way)

This is the recommended method that offers the best picture and sound quality. When you use native cast, the Chromecast receives instructions about which content to play and fetches the stream directly from Amazon's servers — without going through your phone. This means that once playback starts, you can use your phone for other things without interrupting the video on TV.

1. Make sure the Chromecast and your phone are on the same Wi-Fi network. This detail is fundamental — many casting problems happen because the phone is on the 5 GHz Wi-Fi while the Chromecast is on 2.4 GHz (or vice versa), and modern routers that don't support band steering may treat the two bands as separate networks.
2. Open the Amazon Prime Video app on your phone (Android or iOS).
3. On the main screen or inside a movie/series you want to watch, look for the cast icon — it's a rectangular icon with signal waves in the corner. On Android, it typically appears in the top right corner of the playback screen. On iOS, it may be inside the video options menu.
4. Tap the cast icon and wait for the list of available devices to appear. Select your Chromecast's name.
5. Playback will begin on the TV. Use the in-app controls on your phone to pause, skip, adjust volume, and navigate between episodes.

DomineTec Tip: If you have a Chromecast with Google TV (the newest model, with a remote control), Prime Video has a native app installed directly on it. In that case, you don't even need your phone — just open the app directly on the Chromecast. Phone casting makes more sense for older Chromecast models (1st, 2nd, and 3rd generation).

Method 2 — Android Screen Mirror via Google Home

If for any reason the cast icon doesn't appear in the Prime Video app, or if you want to mirror absolutely any content from your phone screen to the TV (not just Prime Video), screen mirroring via Google Home is the alternative. The fundamental difference from native cast is that here you're transmitting the entire phone screen — the Chromecast displays exactly what's on your Android display.

How to mirror via Google Home:

1. Open the Google Home app on your Android phone (available for free on the Play Store).
2. On the Google Home home screen, locate your Chromecast in the device list.
3. Tap on the Chromecast name and on the screen that opens, look for "Cast my screen" or "Mirror device."
4. A notice will appear explaining that everything on your screen will be transmitted. Confirm.
5. Now open the Prime Video app on your phone and start playback normally. What you see on the phone appears on the TV in real time.

Mirroring limitations to be aware of: Unlike native cast, screen mirroring consumes significantly more phone battery (on average 30–40% faster), may show lag if the phone's processor is busy with other tasks, and image quality depends directly on your smartphone's processing power. Also, any notification or call you receive will appear on the TV screen during mirroring.

Compatibility: Screen mirroring only works with Android phones. iPhone owners cannot use this function with Chromecast — the iOS alternative is using the native app cast or watching via AirPlay on an Apple TV.

Method 3 — Casting via Chrome Browser on PC

If you prefer to watch Prime Video from your computer, you can also cast to the Chromecast via the Chrome browser. There are two variations:

Option A — Cast the Chrome tab (recommended for Prime Video):

1. On your computer, open Google Chrome and go to primevideo.com.
2. Start playback of the desired content.
3. Click the three dots icon (menu) in the top right corner of Chrome.
4. Select "Cast..." and then click on "Sources" to choose between casting the tab or the full screen.
5. Choose "Cast tab" and select the Chromecast from the list. The video will appear on the TV.

Option B — Cast the full computer screen: In the same menu, select "Cast desktop." This mirrors your entire monitor to the TV — useful when you want to show something beyond Prime Video, but with lower quality for video streaming.

Casting vs Screen Mirroring: What You Need to Know

Cast Icon Not Showing in Prime Video: How to Fix It

This is the number one problem reported by users. You open Prime Video, look at the playback screen... and the cast icon simply isn't there. Here are the most common causes and solutions:

Outdated app: Amazon frequently releases updates that fix cast support. Go to the Play Store (Android) or App Store (iOS), search for "Amazon Prime Video" and update the app to the latest version.

Phone and Chromecast on different Wi-Fi networks: This is the most common mistake. If your router has two networks ("Home" and "Home_5G"), make sure both the phone and Chromecast are on the same network. Even better: configure your router to use the same SSID on both frequencies with band steering enabled.

Outdated Chromecast firmware: The Chromecast updates automatically when connected to Wi-Fi. If your Chromecast has been unplugged for a long time, it may have old firmware. Leave it connected for a few hours to download pending updates.

Corrupted Prime Video app cache: Go to Settings → Apps → Amazon Prime Video → Storage → Clear Cache. Restart the app and try again.

If you also have an older Chromecast and want to know more about limitations and specific solutions for older models, see our guide on how to watch Disney Plus on old Chromecast — the same principles apply to Prime Video.

How to Use 5 GHz Wi-Fi for Better Casting Performance

Casting quality depends heavily on your Wi-Fi network. Especially for HD and 4K content, 5 GHz offers significant advantages over 2.4 GHz:

• Greater bandwidth: 5 GHz supports much higher speeds, ideal for streaming 4K video.
• Less interference: The 2.4 GHz frequency is shared with Bluetooth, microwaves, and neighboring routers. The 5 GHz band is much less congested.
• Lower latency: 5 GHz responds faster, improving control responsiveness during casting.

The disadvantage of 5 GHz is its shorter range — walls and greater distances attenuate the signal significantly. If the Chromecast is far from the router (more than one room away), 2.4 GHz may be more stable, even with less theoretical speed.

To connect the Chromecast to 5 GHz, use the Google Home app: open the app → tap on the Chromecast → gear icon (settings) → Wi-Fi → forget the current network → connect to the 5 GHz network.

Fire TV Stick as the Native Prime Video Alternative

It's worth mentioning: if you use Prime Video a lot and want the best possible experience on your TV, Amazon's Fire TV Stick is the definitive solution. Being an Amazon product itself, Prime Video runs natively without needing cast, mirroring, or a phone as an intermediary. The app is optimized for the hardware, supports 4K HDR and Dolby Atmos on compatible models, and you control everything with the remote — including voice commands via Alexa.

If you're considering switching from Chromecast to Fire TV Stick specifically for Prime Video, check our article on how to use Firestick without a remote — we explain how the device integrates into the Amazon ecosystem in a much deeper way than any other streaming stick.

Alternative Casting Protocols and Device Compatibility

It is worth noting that while the DIAL (Discovery and Launch) protocol was originally used to launch Prime Video on older Chromecast units, modern models rely entirely on the Google Cast SDK. This transition has greatly improved stream stability and remote control syncing, allowing you to use your TV remote to pause playback directly. Always make sure that Google Play Services is updated on your Android phone to ensure the latest casting libraries are available for the Prime Video application.

FAQ — Frequently Asked Questions About Prime Video and Chromecast

Can I use Prime Video on Chromecast with my iPhone?

Yes. The Prime Video app for iOS supports native cast to Chromecast. Open the app, start a content item and look for the cast icon in the playback screen. Full screen mirroring via Google Home, however, is not compatible with iPhone — that feature is exclusive to Android.

Does Prime Video support 4K on Chromecast?

It depends on the Chromecast model. The Chromecast with Google TV (4K) and Chromecast Ultra support 4K via native Prime Video cast. Earlier models (1st, 2nd, and 3rd gen Chromecast) are limited to Full HD 1080p.

Why does the video quality drop during casting?

Stream quality during native cast is determined by your internet speed, not the phone. Make sure you have at least 5 Mbps for HD and 25 Mbps for stable 4K. If quality drops are visible, Prime Video may be applying automatic throttling to compensate for an unstable connection.

Do the Chromecast and phone need to be on the same Google account?

Not necessarily. The Chromecast needs to be set up under a Google account via the Google Home app, but the Prime Video app doesn't require the same account. What's mandatory is that both devices be on the same Wi-Fi network for casting to work.

Conclusion: Which Method to Use for Prime Video on Chromecast?

For the vast majority of situations, native casting via the Prime Video app is the right choice: it offers the best image quality, consumes less phone battery, and lets you use your smartphone for other tasks during playback. Screen mirroring via Google Home is a valid alternative when the cast icon doesn't appear, but has clear disadvantages in terms of energy consumption and quality.

If you face recurring problems with Chromecast and use Amazon Prime Video heavily, considering the Fire TV Stick as your primary platform might be the smartest long-term decision — the native experience surpasses any cast method in simplicity and quality.