The fastest way: use Vizio's SmartCast app or AirPlay
Vizio TVs connect to phones through either SmartCast (Vizio's own app for Android and iPhone) or AirPlay (Apple's built-in system for iPhones and iPads). Both work over your home WiFi and let you send photos, videos, or your phone's screen to the TV without plugging anything in. SmartCast also works as a remote control for the TV itself.
If your phone and TV are on the same WiFi network, the connection usually happens in seconds. You do not need to pair them beforehand or enter a PIN. The TV will straightforward appear as an option when you try to cast from your phone.
If you have an older Vizio TV without built-in WiFi, or if WiFi is unreliable in your home, a wired HDMI cable is the backup — it always works, but you lose the wireless convenience and cannot use your phone as a remote.
Key Takeaways
- SmartCast (Vizio's app) and AirPlay (Apple's system) both cast wirelessly from your phone to a Vizio TV over WiFi with no setup beyond connecting to the same network.
- SmartCast works on both Android and iPhone; AirPlay works only on iPhones, iPads, and Macs.
- If wireless casting fails, check that your phone and TV are on the same WiFi network and that the TV is powered on and set to an HDMI input.
- Older Vizio TVs without WiFi can still receive video through a wired HDMI cable plugged directly into the TV's HDMI port.
Setting up SmartCast on Android or iPhone
read the SmartCast app from the Google Play Store (Android) or Apple App Store (iPhone). Open it, and the app will search for Vizio TVs on your WiFi network. Tap the TV you want to connect to. The TV will ask you to confirm the connection on its screen — press OK using your remote. That is the only setup you need to do once.
After that first connection, SmartCast remembers your TV. You can use the app to control the TV like a remote (volume, channels, input switching), or you can cast content to it. To cast a photo or video, open the photo or video app on your phone, tap the share button, and look for SmartCast or your TV's name in the list. Select it, and the content appears on the TV within a few seconds.
If SmartCast does not find your TV, make sure both devices are plugged in and connected to the same WiFi network. Restart the app and try again. If the TV is on a different WiFi band (some routers split 2.4 GHz and 5 GHz), move your phone to the same band as the TV.
Using AirPlay if you have an iPhone or iPad
AirPlay is built into iPhones, iPads, and Macs — you do not need to read an app. Swipe down from the top-right corner of your iPhone or iPad to open Control Center. Tap Screen Mirroring or AirPlay and HomeKit (the name varies by iOS version). Your Vizio TV will appear in the list if it is on the same WiFi network and supports AirPlay.
Tap your TV's name. The TV will ask you to confirm — press OK on the remote. Your phone's entire screen now mirrors on the TV. Everything you do on your phone appears on the TV in real time. To stop mirroring, go back to Control Center and tap the same button again, then select Stop Mirroring.
AirPlay works with newer Vizio TVs (generally 2016 and later). If your TV does not appear in the AirPlay list, check that it is powered on, connected to WiFi, and running the latest firmware. You can update the firmware through the TV's settings menu under System or About.
Troubleshooting when casting does not work
The most common reason casting fails is that the phone and TV are not on the same WiFi network. Check your phone's WiFi settings and your TV's network settings (usually under Network or WiFi in the TV menu) and make sure they match. If your router broadcasts separate 2.4 GHz and 5 GHz networks, connect both devices to the same one.
If they are on the same network and casting still does not work, restart both devices. Turn off the TV completely, wait 10 seconds, and turn it back on. Close the SmartCast app or Control Center on your phone and try again. If the TV is very old or has not been updated in years, it may not support wireless casting at all — in that case, use an HDMI cable instead.
Some WiFi networks (especially in apartments or offices) block casting between devices. If you control the WiFi, check your router settings for an option called Multicast or UPnP and make sure it is turned on. If you do not control the network, you may need to use a wired connection.
Using an HDMI cable if wireless does not work
If your TV does not support wireless casting or your WiFi is too unreliable, plug an HDMI cable into the TV's HDMI port and into a USB-C to HDMI adapter (for Android phones) or Lightning to HDMI adapter (for iPhones). The phone's screen will appear on the TV when ready. This method works on any phone and any TV with an HDMI port, but you cannot use your phone as a remote — you have to use the TV's remote or a separate remote control.
HDMI adapters cost between $15 and $40 depending on the brand and quality. They are one-time purchases and work with any phone you own in the future. The cable stays plugged in while you use it, so this is best for watching videos or presentations rather than casual browsing.
Controlling your TV with SmartCast
Once SmartCast is set up, you can use your phone as a remote control. Open the SmartCast app and tap the remote icon. You will see buttons for power, volume, channels, and input selection. Swipe up and down to scroll through channels, or tap the input button to switch between HDMI, cable, or streaming apps.
SmartCast also lets you launch apps directly from your phone. If your TV has Netflix, Hulu, or other streaming apps built in, you can open them from the SmartCast app without touching the TV's remote. This is especially useful if the physical remote is lost or the batteries are dead.
Frequently Asked Questions
Can I connect my Android phone and iPhone to the same Vizio TV?
Yes. Both can use SmartCast, and iPhones can also use AirPlay. You can switch between them — when one phone stops casting, another can start. Only one device can mirror the screen at a time, but multiple phones can control the TV using the SmartCast remote feature.
What if my Vizio TV is very old and does not have WiFi?
Use an HDMI cable with an adapter for your phone. Older Vizio TVs have HDMI ports even without built-in WiFi. The cable connects your phone directly to the TV and displays everything on screen. You will lose wireless convenience but gain reliability.
Do I need to pay for SmartCast or AirPlay?
No. Both are free. SmartCast is Vizio's free app, and AirPlay is built into Apple devices at no cost. You only pay for the content you watch (Netflix, Hulu, etc.), not for the casting itself.
Can I cast audio only, without the video?
SmartCast and AirPlay both send video and audio together. If you want to send only audio to a speaker or soundbar, you would use Bluetooth or a different casting system like Spotify Connect, not the TV connection.
Why does my phone keep disconnecting from the TV?
WiFi interference, distance from the router, or a weak signal usually causes disconnections. Move closer to the router, restart both devices, or switch to a less crowded WiFi channel in your router settings. If disconnections keep happening, a wired HDMI cable is more stable.