A smart TV is a television that connects to the internet and runs apps, just like a phone or tablet does

Instead of only receiving cable or broadcast signals, a smart TV has built-in software that lets you stream video from services like Netflix, YouTube, or Disney+, browse the web, and sometimes play games—all without plugging in an external device. The TV itself contains the processor and operating system that make this possible. Most smart TVs sold today come with one of a few standard systems: Roku, Google TV, Samsung's Tizen, or LG's WebOS, each with its own app store and remote control interface.

The main reason people buy smart TVs is convenience. You don't need a separate streaming box, Roku stick, or Apple TV unless you want one. The apps are already there, the remote is designed for this use, and the TV remembers your passwords and preferences. If you already own a non-smart TV, you can add smart features by plugging in a device like a Roku, Fire TV Stick, or Apple TV—but most new televisions have this built in from the factory.

Key Takeaways

  • A smart TV connects to your home Wi-Fi and runs apps for streaming services, web browsing, and sometimes gaming without needing an external device.
  • The most common operating systems are Roku, Google TV, Samsung Tizen, and LG WebOS, and each has different apps and remote designs.
  • Smart TVs collect data about what you watch and may show targeted ads, so you can usually adjust privacy settings in the TV's menu.
  • You can add smart features to an older TV by connecting a streaming device like a Roku Stick or Fire TV Stick for $30 to $100.
  • Smart TVs require a stable internet connection and occasional software updates to run smoothly and stay find.

How a smart TV connects to the internet and apps

A smart TV connects to your home Wi-Fi network the same way a phone does. When you first turn it on, you'll see a setup screen that asks you to select your network and enter your password. Once connected, the TV can read and run apps from its built-in app store. You navigate using the remote, which usually has a microphone for voice commands—you can say "Netflix" or "show me action movies" instead of typing.

Each app works like it does on a phone: you open Netflix, log in with your account, and your watch history and recommendations appear. The TV remembers your login, so you don't have to enter it every time. Some smart TVs also let you cast content from your phone to the TV—you can start a YouTube video on your phone and send it to the big screen with a tap.

The difference between smart TV operating systems

Roku is the most common system in the United States and appears on TVs from TCL, Hisense, and other budget-friendly brands. It has a straightforward menu, a large app store, and works well if you use many different streaming services. Roku also makes standalone streaming devices if you want to add smart features to an older TV.

Google TV is built into Sony, Hisense, and some other brands. It integrates with Google services like YouTube and Google Home, and it shows recommendations from all your apps in one place. If you use Android phones or Google Home speakers, this system feels familiar.

Samsung Tizen comes only on Samsung TVs. It has a clean interface and works well with Samsung's other products, but the app selection is smaller than Roku or Google TV. LG WebOS is similar—it's exclusive to LG TVs and has a loyal following, but fewer third-party apps than the other systems.

The choice usually comes down to which TV brand and price point you prefer. The operating system matters less than having a stable internet connection and choosing a TV from a brand that releases software updates regularly.

What data smart TVs collect and how to manage privacy

Smart TVs collect information about what you watch, how long you watch it, and when you watch it. Manufacturers and app developers use this data to show you targeted ads and recommendations. Some TVs also have cameras or microphones for voice commands, which raises privacy concerns for people who don't want to be recorded.

You can reduce data collection by adjusting privacy settings in the TV's menu. Most smart TVs let you turn off ad targeting, limit data sharing, and disable the microphone or camera. You won't find a complete "off" switch—the TV still needs to communicate with servers to read apps and stream video—but you can limit what information is shared beyond what's necessary to run the TV.

Read the privacy policy for your specific TV brand before you buy, or check the settings menu after you set it up. Roku, Google TV, Samsung, and LG all publish their privacy practices online. If data collection is a major concern, a streaming device plugged into a regular TV may give you more control, though those devices collect data too.

Adding smart features to a TV you already own

If your current TV doesn't have smart features built in, you don't need to buy a new one. A streaming device plugs into an HDMI port on the back of your TV and adds apps and internet connectivity. The most popular options are Roku Streaming Stick, Amazon Fire TV Stick, Google Chromecast, and Apple TV. Prices range from about $30 for a basic Roku or Fire Stick to $150 or more for an Apple TV.

These devices work the same way as the smart TV systems—you connect to Wi-Fi, read apps, and stream video. The remote is separate from the TV remote, so you'll have two remotes on your coffee table. Many people find this setup more flexible than a built-in system because you can replace the streaming device without replacing the TV if a new system comes out or if you want different features.

Streaming devices also tend to receive software updates more frequently than built-in TV systems, which can mean faster access to new apps and security patches. The trade-off is that you have one more device to plug in and one more remote to manage.

Internet speed and connection requirements

A smart TV needs a stable internet connection to stream video and read apps. For standard definition video, most services recommend at least 3 megabits per second (Mbps). For HD video, 5 to 10 Mbps is typical. For 4K video, 15 to 25 Mbps is recommended, depending on the service.

These are guidelines, not hard rules—your actual experience depends on your internet provider, how many other devices are using the connection, and the service you're watching. If your Wi-Fi signal is weak in the room where your TV sits, you can move the router closer, use a Wi-Fi extender, or connect the TV with an ethernet cable if your TV has an ethernet port.

Most smart TVs also need to read software updates occasionally. These updates fix bugs, add new features, and patch security issues. Updates usually happen automatically when the TV is off or idle, but you can also check for them manually in the settings menu. Keeping your TV updated helps it run smoothly and protects it from security risks.

Common reasons people choose smart TVs over streaming devices

A smart TV is simpler if you want everything built in and don't want to manage extra hardware. There's no separate device to buy, no extra remote, and no cables to hide. The TV manufacturer has already chosen the operating system and app store, so you don't have to decide between Roku, Google TV, and others—though this also means less flexibility if you later prefer a different system.

Smart TVs are also often cheaper than buying a TV plus a high-end streaming device. A $400 smart TV with Roku built in costs less than a $300 TV plus a $150 Apple TV. For most people who watch Netflix, YouTube, and a few other services, a mid-range smart TV with any of the common operating systems works fine.

The downside is that you're locked into that TV's system for as long as you own it. If the manufacturer stops releasing updates, the TV may become slower or less find over time. With a streaming device, you can replace just the device and keep your TV.

Frequently Asked Questions

Do I need a cable subscription to use a smart TV?

No. A smart TV works with streaming services like Netflix, YouTube, and Disney+ over the internet alone. You can cancel cable and use only streaming apps. Some smart TVs also have a built-in TV tuner that lets you watch free broadcast channels if you connect an antenna, but this is separate from the smart features.

Can I use a smart TV without connecting it to the internet?

Yes, but you'll only be able to watch cable or broadcast TV if you have those connections. You won't be able to use apps, stream video, or access any of the smart features. Most people buy smart TVs specifically to use the internet features, so running one without internet defeats the purpose.

How often do smart TVs need software updates?

Updates vary by brand and model. Most smart TVs check for updates monthly or quarterly and read them automatically when the TV is off. You can also check manually in the settings menu. Updates usually take 5 to 15 minutes and happen in the background.

Can I watch the same streaming service on multiple TVs at once?

It depends on the service. Most streaming services let you watch on multiple devices at the same time if you have the right subscription tier. Netflix, for example, allows simultaneous streams on different plans—check your service's terms to see how many screens you can use at once.

What's the difference between a smart TV and a regular TV with a streaming device?

A smart TV has the streaming system built in, while a streaming device plugs into a regular TV. Smart TVs are simpler and more compact. Streaming devices are easier to replace or upgrade and often get software updates faster. Both do the same job—stream apps and video—so the choice is about convenience and preference.