The three ways to connect: HDMI, wireless, and built-in apps

A Samsung TV connects to other devices through one of three routes: a physical cable plugged into an HDMI port on the back or side of the TV, a wireless connection using your home WiFi network, or built-in streaming apps that pull content directly from the internet. Which one you use depends on what device you're connecting and what you want to watch.

HDMI is the most reliable method and works with almost any device — laptops, gaming consoles, cable boxes, streaming devices, and older equipment with an adapter. Wireless connections work best for phones and tablets sending video or audio to the TV. Built-in apps (like Netflix, YouTube, or Hulu) skip the need for another device entirely if your TV has internet access.

Most people end up using all three methods at different times. A cable box might stay plugged in via HDMI, while you occasionally mirror your phone wirelessly and use the TV's built-in Netflix app on weekends.

Key Takeaways

  • HDMI cables are the most common connection method and work with nearly every device, including laptops, gaming consoles, and streaming boxes.
  • Wireless connections (called screen mirroring or casting) let you send video from your phone or tablet to the TV without a cable, but require both devices on the same WiFi network.
  • Samsung TVs with internet access can run apps like Netflix and YouTube directly without needing another device plugged in.
  • Check the back and sides of your TV for available HDMI ports before buying cables or adapters, since the number and type vary by model.

Connecting with an HDMI cable

Find the HDMI ports on your Samsung TV — they are usually on the back or the right side panel. Most TVs have between two and four HDMI ports. Look for a rectangular slot about the size of a USB port, labeled "HDMI" or with a small HDMI symbol.

Plug one end of an HDMI cable into any available HDMI port on the TV. Plug the other end into the HDMI output port on your device (laptop, gaming console, cable box, or streaming device like a Roku or Apple TV). The cable is the same on both ends and only fits one way — if it does not slide in easily, flip it over.

Turn on both the TV and the device. The TV should automatically detect the new input and switch to it, or you may need to press the Input or Source button on the TV remote and select the HDMI port you used. If nothing appears, try a different HDMI port on the TV — one port may be faulty while others work fine.

HDMI cables are inexpensive (usually $5 to $15 for a standard cable) and carry both video and audio, so you do not need a separate audio cable. Longer cables (25 feet or more) sometimes have signal problems; if you need length, a powered HDMI repeater or an active cable can help, but most home setups work fine with a standard cable up to 15 feet.

Wireless connection using screen mirroring or casting

Samsung TVs support wireless screen mirroring through a feature called SmartThings or AirPlay (on newer models). This lets you send video and audio from your phone, tablet, or laptop to the TV without plugging anything in. Both devices must be connected to the same WiFi network.

On an Android phone or tablet, swipe down from the top of the screen twice to open Quick Settings. Look for "Cast" or "Smart View" and tap it. Your Samsung TV should appear in the list of available devices. Tap the TV name, and your screen will mirror to the television within a few seconds.

On an iPhone or iPad, swipe down from the top-right corner to open Control Center. Tap "Screen Mirroring" and select your Samsung TV from the list. The TV must support AirPlay — most Samsung models from 2018 onward do, but older models may not.

On a Windows laptop, press the Windows key and P together to open the projection menu. Select "Connect to a wireless display" and choose your Samsung TV. On a Mac, click the Control Center icon in the top-right corner, select "Screen Mirroring," and pick your TV.

Wireless mirroring works well for presentations, showing photos, or playing videos from your phone, but it uses more battery power than watching through an app and can occasionally lag or drop the connection if your WiFi signal is weak.

Using built-in Samsung TV apps

Most Samsung TVs made in the last five years have built-in apps for Netflix, YouTube, Hulu, Disney+, Prime Video, and other streaming services. These apps run directly on the TV without needing another device, and they are usually the fastest and most reliable way to stream.

Press the Home button on your Samsung TV remote. You will see the TV's home screen with rows of apps. Look for the streaming service you want to use — if it is already there, select it and sign in with your account. If it is not visible, look for an "Apps" icon (usually a grid of squares) and search for the app by name.

Once you install an app, it stays on your TV. You can open it anytime without plugging in another device. The TV must be connected to the internet via WiFi or an ethernet cable for the apps to work.

If your TV is older or does not have the app you want, you can still use a streaming device like a Roku, Apple TV, Amazon Fire Stick, or Google Chromecast plugged into an HDMI port. These devices have their own app stores and often have more options than the TV's built-in apps.

Connecting to WiFi so your TV can access the internet

Before you can use built-in apps or wireless casting, your Samsung TV needs to connect to your home WiFi network. Press the Home button on the remote and look for Settings (usually a gear icon). Select Settings, then Network, then WiFi.

Your TV will scan for available networks and show a list of WiFi names (SSIDs) in your area. Select your home network name. If your network is hidden, you may need to select "Add Network" and type the name manually.

Enter your WiFi password when prompted. The TV will connect and should show a confirmation message. If the connection fails, double-check that you typed the password correctly — WiFi passwords are case-sensitive.

If your TV is far from your router and the signal is weak, move the router closer, use a WiFi extender, or connect the TV to the internet using an ethernet cable plugged into the back of the TV. Ethernet is more stable than WiFi and does not depend on signal strength.

Troubleshooting common connection problems

HDMI cable plugged in but no picture: Try a different HDMI port on the TV — one port may be damaged. Make sure the other end of the cable is firmly plugged into your device. Press the Input or Source button on the TV remote and manually select the HDMI port. If you still see nothing, try a different HDMI cable to rule out a faulty cable.

Wireless casting connects but keeps dropping: Move your phone or laptop closer to the TV and router. Check that both devices are on the same WiFi network (not a guest network). Restart the TV and your device. If the problem continues, your WiFi signal may be too weak — try moving the router or using an ethernet cable instead.

Built-in app will not open or keeps crashing: Restart the TV by unplugging it for 30 seconds, then plugging it back in. Go to Settings, Apps, and look for the app that is failing. Select it and choose "Clear Cache" or "Uninstall," then reinstall it from the app store. If the TV's internet connection is slow or unstable, apps may not load properly.

TV does not recognize the device you are trying to connect: Make sure both devices are powered on and on the same WiFi network (for wireless connections). Restart both devices. On HDMI connections, try unplugging and replugging the cable. If you are using an adapter to connect an older device, make sure the adapter is the correct type for your device and TV.

Understanding HDMI port types and adapters

Most Samsung TVs use standard HDMI ports, but some older models or specific ports may use HDMI Mini or HDMI Micro connectors. Standard HDMI is the most common and works with nearly all devices. If your device has a different connector type, you will need an adapter.

Common adapters include USB-C to HDMI (for newer laptops and phones), DisplayPort to HDMI (for some computers), and DVI to HDMI (for older graphics cards). These adapters are inexpensive ($10 to $25) and available at any electronics store. Make sure you buy the correct direction — for example, a USB-C to HDMI adapter, not HDMI to USB-C.

Some devices like older laptops or gaming consoles may not have HDMI at all. In those cases, a streaming device plugged into an HDMI port on the TV is usually the simplest solution, since the streaming device handles the connection and you do not need to find or buy an obscure adapter.

Frequently Asked Questions

Can I connect multiple devices to my TV at the same time?

Yes, but only one can display on the screen at a time. You can have a cable box plugged into HDMI 1, a gaming console in HDMI 2, and a streaming device in HDMI 3. Use the Input or Source button on the remote to switch between them. Built-in apps and wireless casting work alongside HDMI devices — you can use the TV's Netflix app, then switch to HDMI to watch cable, then cast from your phone.

Do I need a special HDMI cable for 4K or newer TVs?

Standard HDMI cables work with 4K TVs, but for the best performance with 4K content at 60 frames per second, look for a cable labeled "High Speed HDMI" or "HDMI 2.0." These are only slightly more expensive than basic cables and are worth buying if you plan to use 4K streaming or gaming. Older standard cables may work but could have occasional glitches.

What if my TV does not have WiFi built in?

Older Samsung TVs without built-in WiFi can still access streaming apps and wireless casting by plugging a streaming device (Roku, Apple TV, Fire Stick, or Chromecast) into an HDMI port. The streaming device handles the WiFi connection and runs the apps. This is often cheaper than replacing the TV.

Can I use a phone charger cable to connect my phone to the TV?

No. A USB charging cable carries power only, not video. You need either an HDMI adapter designed for your phone (USB-C to HDMI or Lightning to HDMI) or a wireless casting connection. Wireless casting is usually simpler and does not require buying an adapter.

Why does my TV say "no signal" even though the cable is plugged in?

The device on the other end of the cable may be off or not set to output video. Turn on the device and check that it is set to HDMI output mode (not internal speakers or a different output). Try a different HDMI port on the TV. If you have tried multiple ports and cables, the TV's HDMI input may be faulty — contact Samsung support or a repair technician.