How to connect a TV to the internet: Wi-Fi or cable – which is better in 2026?

Choosing between connecting your TV to the internet via Wi-Fi or network cable (Ethernet) depends not only on the technical capabilities of your Smart TV but also on specific tasks: watching 4K video, online gaming, streaming, or working with a smart home. Both options have pros and cons that are critical to consider before setting up.

For example, Samsung QLED 2026+ And LG OLED C3 support Wi-Fi 6E, which theoretically provides speeds up to 2.4 Gbps, but in practice, signal stability depends on the distance to the router, interference from neighboring networks, and even the wall materials. On the other hand, Gigabit Ethernet guarantees minimal latency (ping < 10 ms), which is critical for cloud gaming through NVIDIA GeForce NOW or Xbox Cloud Gaming.

In this article we will discuss:

• 🔌 Technical differences between Wi-Fi and Ethernet for Smart TV (speed, ping, reliability).
• 📺 Step-by-step instructions connections for TVs Samsung, LG, Sony And Xiaomi.
• ⚡ Top 5 problems and their solutions (from "no network" to slow internet).
• 📊 Comparison table by 7 key parameters.

1. Wi-Fi vs. Ethernet: A Technical Comparison for Smart TVs

The main difference between wireless and wired connection is stability and throughput. Even if your router supports Wi-Fi 6 (802.11ax), the actual speed on the TV will be lower than stated due to:

• 📡 Distance from the router: every meter and obstacle (wall, furniture) reduces speed by 10–30%.
• 🔄 Interference from other devices: microwaves, wireless headphones, neighboring networks on the same channel.
• 📶 TV chipset limitations: many budget models (TCL 4-Series, Hisense A6) use outdated Wi-Fi 4 (Max. 300 Mbps).

Ethernet is free from these problems: cable Cat 5e provides up to 1 Gbps at a distance of up to 100 meters without loss. However, the following are important here:

• 🔌 Cable quality: Cheap unshielded wires can create interference.
• 🖥️ Port on the TV: some models (Sony X80K) have only Fast Ethernet (100 Mbps).

Why does 4K video slow down over Wi-Fi, even if the speed is 500 Mbps?

The problem is not the speed, but jitter (latency variations). When streaming 4K HDR with Netflix or YouTube The TV constantly buffers data. Wi-Fi is prone to ping spikes due to interference, while Ethernet provides a stable stream. For example, for 4K@60fps at least is required 25 Mbps constant speed, not peak.

A critical detail: TVs with Wi-Fi 5 (802.11ac) and higher do not support 160 MHz wide channels, which limits the actual speed to 600–800 Mbps even at close range. This means that for streaming 8K or cloud gaming, Ethernet remains the only reliable option.

2. When to Choose Wi-Fi: 5 Benefits of Wireless Connection

Wireless connection is justified in the following cases:

• 🏠 Unable to lay cable: the TV is hanging on the wall, and the router is in another room.
• 📱 Mobile applications are used: For Apple AirPlay, Google Cast or Miracast A shared Wi-Fi network is more convenient.
• 🔄 Frequent change of TV location: for example, taking a TV to the dacha or rearranging things in a room.
• 🎮 Connecting peripherals: wireless game controllers (DualSense, Xbox Wireless Controller) work more stably over Wi-Fi.
• 💰 Saving on cables: no need to buy long Ethernet or extenders.

Modern TVs (Samsung QN90C, LG G3) are optimized for Wi-Fi 6 and automatically switch to less congested channels. However, even they are not immune to problems:

⚠️ Attention: If your router is older than 2020, it may not support WPA3 — a new encryption standard required for maximum speed on Wi-Fi 6. In this case, update your router's firmware or enable compatibility mode. WPA2/WPA3.

3. Ethernet: When you can't do without a cable

A wired connection is required in the following scenarios:

Even if your TV only supports Fast Ethernet (100 Mbps), this is enough for most tasks, except 8K-streaming. The main thing is to use a cable Cat 5e or higher and avoid "twists".

⚠️ Attention: Some TVs (Sony X90J, Hisense U7G) automatically turn off Wi-Fi when connecting to Ethernet. If you need to leave both connections active (for example, for DLNA), check the settings in the section Network → Advanced.

4. Step-by-step instructions: how to connect your TV to Wi-Fi

The connection algorithm is virtually identical for all brands, but there are some nuances in the interface. Let's look at an example. Samsung QLED, LG OLED And Xiaomi TV:

📺 Samsung (Tizen OS)

1. Click Home on the remote control → Settings (gear icon).
2. Select General → Network → Open network settings.
3. Click Wireless network → select your network from the list.
4. Enter the password. If the network is not listed, click Refresh or check the visibility of the SSID in the router settings.

📺 LG (webOS)

1. Button Settings (gear) → All Settings → Network.
2. Select Connecting to Wi-Fi → your network.
3. If requested Security type, please indicate WPA2-PSK (or WPA3, if the router is modern).
4. After connecting, check the speed in Settings → Network → Network Status.

📺 Xiaomi (PatchWall)

1. Settings (button with three dots) → Network and Internet.
2. Select Wi-Fi → turn on the slider and select a network.
3. If the network is not visible, click Add a network manually and enter the SSID.
4. To resolve connection issues, please reboot your TV (Settings → About TV → Restart).

If your TV won't connect to Wi-Fi:

• 🔄 Restart your router (turn it off for 30 seconds).
• 📵 Check if it is enabled on your router Client isolation mode (disables data exchange between devices).
• 🔧 Update your TV firmware: Settings → Support → Software Update.

5. Connecting via cable: nuances and errors

An Ethernet connection seems simple, but there are pitfalls. For example, if the internet doesn't work after connecting the cable, the following could be the cause:

Step-by-step instructions for wired connection:

1. Connect the cable to the port LAN on the TV and router.
2. On TV: Settings → Network → Cable connection.
3. If prompted for IP settings, select Auto (DHCP).
4. Check the connection in Network status.

⚠️ Attention: Some providers (eg Rostelecom or Beeline) bind the IP address to the device's MAC address. If the internet isn't working, clone the computer's MAC address in the router settings or call support.

6. Comparison table: Wi-Fi vs. Ethernet for Smart TV

Conclusion: Ethernet wins on technical parameters, But Wi-Fi is more convenient For everyday use. The best option is to use both connections in parallel (if your TV supports them): Wi-Fi for mobile functions, Ethernet for streaming and gaming.

7. Top 5 problems and their solutions

Let's look at the most common errors and how to fix them:

• 🔴 "No Internet connection" (Wi-Fi/Ethernet)

  Reasons:

  • The router does not distribute IP (check DHCP).
  • Incorrect password or security type.
  • MAC filtering on the router (add the TV's MAC address to the whitelist).

• 🐢 Slow Wi-Fi internet

  Solutions:

  • Switch to range 5 GHz (less interference).
  • Reduce the channel width with 80 MHz to 40 MHz (will increase stability).
  • Turn it off QoS on the router (may limit the speed for TV).

• 🔌 Ethernet is not detected

  What to do:

  • Check the cable with a tester or connect it to another device.
  • Update your TV firmware (port bugs are fixed in new versions).
  • Try a different port on your router.

If the problem persists, reset the network settings on your TV:

Settings → General → Reset → Reset network settings

or update the router firmware (instructions for TP-Link, ASUS, Keenetic (available on official websites).

8. Additional tips for advanced users

If you want to get the most out of your connection:

• 🛠️ Configure traffic priority (QoS):

  On the router (ASUS RT-AX88U, Keenetic Ultra) in the section QoS or Traffic priority Add the TV's MAC address and set it to maximum priority HTTP/HTTPS And UDP (for streaming).

• 🔗 Use Powerline adapters:

  If it is impossible to lay a cable and Wi-Fi is slow, adapters TP-Link AV2000 transmit the Internet through electrical wiring at speeds up to 1.2 Gbps.

• 🔄 Disable IPv6:

  Some TVs (Sony Android TV) don't work well with IPv6. Disable it in your router settings if you're having connection issues.

For owners Android TV (For example, Sony Bravia or Philips):

Settings → Network & Internet → Wi-Fi → Advanced → Static IP

Assign the TV a fixed IP outside the DHCP range (e.g. 192.168.1.100) to avoid conflicts with other devices.

How to check the actual speed on a TV?

Many TVs have a built-in speed test:

• Samsung: Settings → General → Network → Network Status → Speed ​​Test.
• LG: Settings → All settings → Network → Network diagnostics.
• Android TV: Install the application Analiti or Speedtest by Ookla.

Compare the results with data on a computer connected to the same router.

FAQ: Frequently Asked Questions

❓ Is it possible to connect a TV to the Internet via a USB modem?

Yes, but only if the TV supports it. USB-tethering (for example, some models Samsung And LG). Connect the modem (for example, Huawei E3372) to the port USB on the TV and select in the network settings Mobile InternetHowever, the speed will be limited. 4G-network (max. 150 Mbps), and traffic is charged according to the mobile tariff.

❓ Why can't my TV detect the 5 GHz network?

Possible reasons:

• The TV is older than 2018 and only supports 2.4 GHz.
• The range is disabled in the router settings. 5 GHz.
• The channel width on the router is set to 160 MHz (try it 80 MHz).

❓ How do I connect my TV to the internet without a router (directly to my PC)?

Methods:

1. Via Ethernet: Connect the TV to the PC with a cable and Windows Network and Sharing Center turn on Connection Sharing.
2. Via Wi-Fi (hotspot): On your PC, start Wi-Fi sharing (mobhotspot or netsh wlan start hostednetwork) and connect the TV to the created network.

Limitations: The speed will be lower than when connecting through a router, and some functions (for example, DLNA) may not work.

❓ Which cable is better for 4K streaming: Cat 5e or Cat 6?

Cat 5e enough for 4K@60fps (required) ~25 Mbps), but if you are planning 8K or cloud gaming, take it Cat 6 (to 10 Gbps at a distance of up to 55 m). Shielded cables (STP) is preferable in conditions of interference (for example, near powerful electrical appliances).

❓ Is it possible to use Wi-Fi and Ethernet at the same time?

Depends on the model:

• Samsung And LG (2022+) support Link Aggregation - simultaneous use of both channels to increase speed.
• Android TV usually prioritizes Ethernet and disables Wi-Fi.
• Xiaomi Allows you to select the primary connection manually.

To enable both channels, check the section Settings → Network → Advanced.