The basic connection: what you're actually doing

Connecting your phone to a Roku TV means sending video, audio, or control signals from your phone to your TV through your home WiFi network. You are not plugging anything in — the connection is wireless. Your phone and TV must be on the same WiFi network, and your Roku TV must support the specific feature you want to use.

Roku TVs support three main ways to connect a phone: screen mirroring (showing your phone's screen on the TV), casting apps (sending video from specific apps like YouTube or Netflix), and using your phone as a remote control. Not all Roku models support all three, so the first step is checking what your TV can do.

The process differs depending on whether you have an iPhone or Android phone, and which Roku model you own. Older Roku TVs may not support any of these features. You can find your TV model number on a sticker on the back of the TV or in the Settings menu under System Information.

Key Takeaways

  • Your phone and Roku TV must be connected to the same WiFi network before any connection will work.
  • Screen mirroring on Android phones is built into most models, but iPhones require AirPlay support, which only newer Roku TVs have.
  • Casting from apps like YouTube or Netflix works on most Roku TVs and is often easier than screen mirroring.
  • You can use your phone as a remote by downloading the official Roku app, which works on both iPhone and Android.
  • If your TV does not support a feature you want, a Roku streaming stick or box plugged into an HDMI port can add it.

Screen mirroring from an Android phone

Android phones have a built-in feature called Cast or Screen Mirroring that works with most Roku TVs made after 2014. To use it, make sure your phone and TV are on the same WiFi network. Then open the Quick Settings panel on your phone by swiping down from the top of the screen twice.

Look for a button labeled Cast, Screen Mirroring, or Smart View — the exact name depends on your phone's brand and Android version. Tap it, and your phone will search for nearby devices. Your Roku TV should appear in the list with its name (usually something like "Living Room" or "Bedroom TV"). Tap your TV's name, and your phone's screen will appear on the TV within a few seconds.

Once mirroring is active, everything on your phone displays on the TV — apps, web pages, photos, videos. The TV will show a notification that mirroring is active. To stop, swipe down again and tap the Cast button, then select Disconnect.

Screen mirroring from an iPhone

iPhones use AirPlay, which is Apple's mirroring standard. Only Roku TVs made in 2019 or later support AirPlay. If your Roku TV is older, you cannot use this method — you will need to use casting from apps instead, or connect a different device.

To check if your TV supports AirPlay, go to Settings on your Roku TV, then System, then About. Look for AirPlay Support listed as "Supported" or "Not Supported." If it is supported, make sure your iPhone and Roku TV are on the same WiFi network.

On your iPhone, swipe down from the top-right corner to open Control Center. Tap Screen Mirroring, and your Roku TV should appear in the list. Tap your TV's name, and your iPhone screen will mirror to the TV. To stop mirroring, open Control Center again, tap Screen Mirroring, and select Stop Mirroring.

Casting from apps like YouTube and Netflix

Casting is simpler than screen mirroring because you are sending video from one specific app, not your entire phone screen. Most streaming apps — YouTube, Netflix, Disney+, Hulu, Spotify — have a Cast button built in. This works on almost all Roku TVs, even older models.

Open the app on your phone and start playing a video or song. Look for a Cast icon, usually a rectangle with a WiFi symbol in the corner. Tap it, select your Roku TV from the list, and the video will start playing on your TV. Your phone becomes a remote — you can pause, skip, or adjust volume from the app, and your phone screen can go dark without stopping playback.

Casting uses less battery than screen mirroring and works more reliably on slower WiFi networks. If you mostly watch Netflix or YouTube, casting is usually the best choice.

Using your phone as a remote control

The official Roku app turns your phone into a full remote control for your TV. read the Roku app from the Apple App Store or Google Play Store. Open it, tap Devices at the bottom, and select your Roku TV from the list. Your phone and TV must be on the same WiFi network.

The app shows a virtual remote with buttons for power, volume, channels, and navigation. You can also type using the keyboard on your phone instead of using the TV remote's letter-by-letter search. The app works even if your TV does not support mirroring or casting.

If your TV does not appear in the app, make sure both devices are on the same WiFi network and that your TV is powered on. Restart the app and try again. Some older Roku models may not be compatible with the app.

Troubleshooting when the connection fails

If your phone does not find your Roku TV, the most common cause is that they are on different WiFi networks. Check that both devices are connected to the same network name. If you have a 5GHz and 2.4GHz network with the same name, try connecting both devices to the 2.4GHz network, which has better range and compatibility.

Restart both your phone and TV. Turn off the TV completely, wait 10 seconds, and turn it back on. Restart your phone the same way. Then try connecting again. If mirroring or casting still does not work, check that your Roku TV software is up to date by going to Settings, System, System Update, and selecting Check Now.

If you are trying to use AirPlay on an iPhone and it does not appear as an option, your TV either does not support AirPlay or it is not enabled. Go to Settings on your Roku TV, then System, then AirPlay and HomeKit, and make sure AirPlay is turned on. If your TV model is older than 2019, AirPlay is not available.

When your Roku TV does not support what you need

If your TV is too old to support mirroring or casting, you have two options. The simplest is to buy a Roku Streaming Stick 4K or Roku Ultra, which plug into an HDMI port on your TV. These devices have the same features as a Roku TV and support screen mirroring, casting, and the Roku app remote. They cost between $50 and $100.

Alternatively, you can use a different casting device like Google Chromecast or an Apple TV, which also plug into HDMI. These work with most phones and support casting from the same apps. The choice depends on which ecosystem you prefer and what other devices you already own.

Frequently Asked Questions

Do I need to pair my phone with the TV before connecting?

No. As long as both devices are on the same WiFi network, your phone will find your Roku TV automatically. You do not need to enter a PIN or pair them beforehand. The first time you connect, the TV may ask you to confirm the connection, but after that it remembers your phone.

Can I use my phone as a remote while someone else is casting?

Yes. The Roku app remote works independently of mirroring or casting. You can use the app to control the TV, change inputs, or adjust volume while another person is casting video from their phone or app.

Does screen mirroring work over a guest WiFi network?

Usually not. Your phone and TV need to be on the same network, and guest networks are often isolated from the main network. Connect both devices to your main WiFi network instead. If you only have a guest network, try connecting both to it — they may still see each other.

Will mirroring drain my phone battery quickly?

Yes, screen mirroring uses more battery than casting because your phone is constantly sending video data. If you plan to watch for more than an hour, plug your phone in. Casting uses much less battery because the app handles the video, not your phone's screen.

What if my Roku TV is not showing up in the Cast list?

Restart both devices and make sure they are on the same WiFi network. Check that your Roku TV is powered on and not in sleep mode. If it still does not appear, go to Settings on your TV and look for a Cast or Mirroring option — it may be turned off. Turn it on and try again.