Learning how to cast Roku lets you play videos, music, and photos from a mobile device or computer on your TV. Roku supports casting from many popular apps, while Roku TVs and newer Roku players may also support AirPlay and screen mirroring. The exact method depends on your device, Roku model, and the app you want to use.
Before You Cast to Roku
Start by checking a few basic requirements:
- Your Roku player or Roku TV must be powered on and connected to Wi-Fi.
- Your phone, tablet, or computer should use the same Wi-Fi network as the Roku.
- Install the latest version of the streaming app you want to use.
- Update your Roku by going to Settings > System > Software update > Check now.
- Confirm that the app supports Roku casting, AirPlay, or screen mirroring.
Using the same network is especially important. If your phone is connected to cellular data, a guest Wi-Fi network, or a different router band that isolates devices, the Roku may not appear.
You can check the Roku’s network connection at Settings > Network > About. Compare the listed Wi-Fi name with the network shown on your phone or computer.
How to Cast Roku From Android
Many Android streaming apps include a Cast button that sends playback to a Roku device. The button usually looks like a rectangle with curved wireless lines in the corner.
- Connect your Android phone and Roku to the same Wi-Fi network.
- Open a supported app, such as YouTube, Netflix, Hulu, or another compatible service.
- Start playing a video.
- Tap the Cast icon.
- Select your Roku from the device list.
- Use your phone as a remote to pause, resume, adjust playback, or browse for another title.
When casting works, the Roku opens the app or starts playback automatically. In some cases, the Roku must already have the corresponding channel installed. If prompted, add the channel to your Roku and wait for it to finish installing.
Casting does not usually send the entire Android screen. Instead, the app hands playback control to the Roku, which streams the content directly. This generally provides better video quality and allows you to keep using your phone for other tasks.
Some Android phones also support full-screen mirroring. On the Roku, enable it by selecting Settings > System > Screen mirroring > Screen mirroring mode and choosing Prompt or Always allow. Then open your phone’s screen-casting feature, which may be called Smart View, Cast, Wireless display, or Screen share.
How to Cast Roku From iPhone or iPad
iPhone and iPad users can cast from apps that support Roku, AirPlay, or both. For AirPlay, your Roku must be an AirPlay-compatible model with an updated operating system.
To cast from a supported iPhone or iPad app:
- Join the same Wi-Fi network on the Apple device and Roku.
- Open the streaming app.
- Play the content you want to watch.
- Tap the app’s Cast, AirPlay, or sharing icon.
- Choose your Roku device.
For full AirPlay mirroring, open Control Center. On newer iPhones, swipe down from the upper-right corner; on older models, swipe up from the bottom. Tap Screen Mirroring, select the Roku, and enter the code displayed on the TV if requested.
If AirPlay does not appear, check the Roku settings under Settings > Apple AirPlay and HomeKit. Make sure AirPlay is turned on. You may also need to set the “Require Code” option to ask for a code the first time or every time.
Not every iPhone app supports AirPlay or Roku casting. Some services restrict mirroring because of licensing rules. In that situation, install the service’s Roku channel and use the Roku remote instead.
How to Cast Roku From a Windows PC or Mac
Windows computers can mirror their screen to some Roku devices through Miracast, while Macs generally use AirPlay.
On a compatible Windows 10 or Windows 11 computer:
- Enable screen mirroring on the Roku under Settings > System > Screen mirroring.
- Press Windows + K on the computer.
- Select the Roku from the available wireless display devices.
- Approve the connection on the TV if Roku asks for permission.
You can then duplicate or extend the computer display, depending on your Windows settings. Mirroring is useful for websites, presentations, and locally stored media, although streaming video may look less smooth than using a native Roku channel.
On a Mac:
- Make sure the Mac and Roku use the same Wi-Fi network.
- Click the Control Center icon in the menu bar.
- Select Screen Mirroring.
- Choose the Roku.
- Enter the AirPlay code shown on the TV if requested.
You can also use the AirPlay icon inside supported video or music apps instead of mirroring the entire Mac screen.
Fix Common Roku Casting Problems
If your Roku does not appear, restart both the Roku and the casting device. Also close and reopen the streaming app. A temporary network or app error often prevents discovery.
Next, check these common fixes:
- Disable any VPN on the phone or computer.
- Turn off mobile hotspot mode.
- Connect both devices to the primary home network, not guest Wi-Fi.
- Restart the router if other devices also have connection problems.
- Update the streaming app and Roku software.
- Make sure the Roku is not blocked by a router’s device-isolation setting.
- Remove and reinstall the problematic app if only one service fails.
For Android screen mirroring, compatibility varies by phone manufacturer and Android version. A phone may support casting to Chromecast devices but not Miracast-enabled Roku models. For iPhone, AirPlay compatibility depends on the Roku model and software version.
If casting connects but the video is black, the service may block screen recording or mirroring. Use the official Roku channel or the app’s built-in casting feature instead.
FAQ: Casting to Roku
Can I cast any app to Roku? No. The app must support Roku casting, AirPlay, or screen mirroring. If it does not, search for the service in the Roku Channel Store and install its official channel.
Why can’t my phone find my Roku? Make sure both devices are on the same Wi-Fi network, then restart the app, phone, and Roku. Disable VPNs and avoid guest networks, which can prevent devices from communicating.
Can I cast without Wi-Fi? Usually, no. Roku casting and AirPlay require a local network. Some phones can create a hotspot, but compatibility is inconsistent and may use substantial mobile data.
Conclusion
Knowing how to cast Roku makes it easy to move content from a phone, tablet, or computer to a larger screen. Use an app’s Cast button when available, AirPlay for compatible Apple devices, or screen mirroring for supported Android and Windows hardware. Keeping your Roku, apps, and network updated will provide the most reliable experience.
