To connect your Samsung phone to Roku TV, use the built-in Smart View feature on your Samsung phone to wirelessly mirror your entire screen to the TV. This method, which relies on Miracast technology, shows everything on your phone, apps, menus, and buttons, on the Roku TV display.
Check compatibility between your Samsung phone and Roku TV
Your Samsung phone needs Android 4.3 or above and support for Miracast wireless display technology, which is standard on Galaxy phones and tablets that offer Smart View. Most current-generation Roku streaming players and Roku TV models support screen mirroring. The exceptions are older models: Roku Express model 3700 and Roku Express+ model 3710 do not support screen mirroring at all. The Roku Express+ model 3910 supports mirroring only on HDMI output, not composite or A/V connections.
Connect using Samsung Smart View for full screen mirroring
This method mirrors your entire phone screen, including all apps, notifications, and navigation, to the Roku TV. Samsung's troubleshooting page names the feature Smart View and says it uses Miracast wireless display technology. Roku's mirrored-content description says the TV shows everything on the phone screen, including buttons and menus.
- Ensure both your Samsung phone and Roku TV are connected to the same Wi-Fi network.
- On your Roku TV, enable screen mirroring: go to Settings > System > Screen mirroring. Set the mode to Prompt or Always allow.
- On your Samsung phone, pull down the status bar and tap Smart View.
- Select your Roku device from the list that appears.
- Roku's support page says that after choosing the Roku device in Smart View, you must follow the on-TV instructions to allow screen mirroring.
Once connected, your phone screen appears on the TV. You can now browse, stream, or use any app while seeing everything on the larger display. This is the direct method for full screen mirroring, distinct from casting individual app content.
Use the Roku mobile app for casting specific content
The Roku mobile app does not mirror your full phone screen. Roku's official casting page describes the Roku mobile app as a way to cast app content to a TV, where only the selected piece of content plays on the TV, not the full phone screen.
- Download and install the Roku mobile app on your Samsung phone.
- Connect both your phone and Roku TV to the same Wi-Fi network.
- Open the Roku app and connect to your Roku TV.
- Within a supported app (like YouTube or Netflix), tap the cast icon and select your Roku TV to send that content to the screen.
Troubleshooting Samsung phone to Roku TV connection problems
If you cannot connect or the mirroring stops working, try these common fixes in order:
- Verify both devices are on the same Wi-Fi network. Smart View and screen mirroring require this.
- Check that your Roku model supports screen mirroring. The Roku Express 3700 and Express+ 3710 do not support it; the Express+ 3910 supports it only on HDMI.
- Restart both your Samsung phone and Roku TV. A simple reboot often resolves temporary connection issues.
- Update the software on both devices to the latest available versions.
- On your Roku TV, confirm screen mirroring is enabled under Settings > System > Screen mirroring, and set to Prompt or Always allow.
- Roku distinguishes screen mirroring from casting, so a feature mismatch can prevent a user from getting the full-screen result they expect.
- As a last resort, use an HDMI cable to connect your phone to the TV directly if wireless methods fail.
Frequently Asked Questions
Does Samsung support Roku screen mirroring?
Yes. Samsung phones and tablets running Android 4.3 or above with Miracast support can use Smart View to mirror their screen to a compatible Roku device.
Where is screen mirroring on Roku?
On your Roku TV, go to Settings > System > Screen mirroring. You can set the mode to Prompt (asks each time) or Always allow (accepts connections automatically).
Can I use my phone while mirroring?
Yes. When screen mirroring is active, your phone screen appears on the TV. You can continue using your phone normally, browsing, checking messages, or opening apps, and everything you see will also display on the TV.
What if my Roku model doesn't support mirroring?
If your Roku is an older model that lacks screen mirroring support, you cannot use Smart View for full screen mirroring. In that case, use the Roku mobile app to cast individual app content, or connect via an HDMI cable if your phone supports video output.
For the wider topic, see screen mirror Android.
