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What is a smart TV box?

A smart TV box is a small computer that plugs into your TV’s HDMI port and adds apps: streaming services, catch-up TV, live TV players, music and games. It turns an older TV into a smart one, or replaces the slow, rarely updated apps on a newer set. Here’s how they work, the main kinds, and the kind to steer clear of.

Updated · 3 min read

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What a smart TV box does

A smart TV box does for a TV what a smartphone does for a phone line: it adds an operating system and an app store. Plug it into a spare HDMI port, connect it to your broadband by Wi-Fi or cable, sign in, and the TV gains:

  • Streaming services such as Netflix, Disney+ and Prime Video.
  • UK catch-up and live TV through the broadcasters’ own apps.
  • IPTV player apps that play a channel list from a service you subscribe to.
  • YouTube, music, photos and casting from your phone.
  • Games, from simple app-store titles to cloud gaming on stronger boxes.

The box does the work and the TV simply displays the picture, so a ten-year-old TV with an HDMI port gets the same apps as a new one.

The main kinds of box

PlatformExamplesApps come fromGood to know
Google TV / Android TVGoogle TV Streamer, Nvidia Shield, FormulerGoogle PlayThe widest choice of apps, including most IPTV players
Fire TVFire TV Stick, Fire TV CubeAmazon AppstoreNewer Vega OS models install Appstore apps only
Apple TVApple TV 4KApp StorePolished and secure; a smaller but good choice of IPTV players
RokuRoku sticks and boxesRoku Channel StoreSimple; check your IPTV player supports Roku before buying
Uncertified Android boxesUnbranded boxes sold onlineVaries; often no Google PlayNo security updates; often sold “loaded” (see below)

For live TV with a programme guide, the Google TV, Fire TV and Apple TV platforms have the strongest player apps. Our device guides cover each: Android TV boxes, Fire TV and Apple TV.

Box, stick or smart TV?

Smart TV’s own appsStreaming stickStreaming box
Extra hardwareNonePlugs into HDMISits beside the TV
App choiceDepends on the TV brand and ageGoodGood to best
UpdatesCan stop after a few yearsDepends on the makerDepends on the maker
Wired internetUsuallyOnly with an adapterUsually built in
Memory and storageVariesLowerHigher

As an example of the gap, the Google TV Streamer has 4 GB of memory, 32 GB of storage and gigabit Ethernet built in, while a Fire TV Stick 4K Max has 2 GB of memory and 16 GB of storage and needs an adapter for a cable. For most bedrooms a stick is plenty; for the main TV, especially for live TV and sport, a box with a cable connection is the smoother choice. See Firestick vs Android TV box.

What you need

  1. A TV with a free HDMI port. Almost every flat-screen TV has one.
  2. Broadband. Around 10 Mbps for Full HD and 25 Mbps for 4K per screen. See internet speed for IPTV.
  3. An account for the platform: Google, Amazon or Apple.
  4. The apps you want, and subscriptions for any paid services.

Certified boxes vs “fully loaded” boxes

Certified Google TV and Android TV boxes are Play Protect certified and ship with Google Play, and well-supported brands issue security updates. You can check certification in the Play Store app’s settings under About.

Cheap unbranded boxes are different. They often run modified software, can’t get updates, and are frequently sold “fully loaded” with apps offering free pay-TV and films. That’s a legal problem, since supplying such devices is a criminal offence in the UK, and a security one. In June 2025 the FBI warned that more than a million devices, including cheap TV boxes, had been infected by the BADBOX 2.0 malware network, and named signs such as being asked to turn off Play Protect. See Android TV box malware and dodgy Firesticks.

Choosing one

Look for Google certification, at least 2 GB of memory, 16 GB or more of storage, an Ethernet port and a brand that issues updates. Our best Android TV box for IPTV guide goes through the checklist and the boxes worth buying.

FAQ

Smart TV box questions

What does a smart TV box do?

It connects your TV to the internet and runs apps on it: streaming services, the UK broadcasters’ catch-up players, IPTV players, YouTube, music and games. You control it with its own remote, and it outputs the picture over HDMI.

Do I need a smart TV box if I have a smart TV?

Not necessarily. A box helps when the TV’s own apps are slow, missing or no longer updated, or when you want a wired network connection and a wider choice of apps.

Is an Android TV box legal?

Yes. Certified Android TV and Google TV boxes are ordinary consumer devices. What’s illegal is a box sold “fully loaded” with apps or subscriptions that stream pay-TV without permission.

What is the difference between a TV box and a TV stick?

A stick plugs straight into the HDMI port and hides behind the TV; a box sits beside the TV. Boxes usually have more memory and storage and a built-in Ethernet port, while sticks are smaller and cheaper.

Sources

Facts on this page were checked against these sources. Details were correct when checked; apps and devices change, so we review this page regularly.

  1. Google TV Streamer specs, 9to5Google (2024-08-06)
  2. Fire TV streaming media player specifications, Amazon Developer (2026-09-27)
  3. Home internet connected devices facilitate criminal activity, FBI (2025-06-05)

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