You must have the Wireless Network Name (SSID) and the Wireless Network Key (Password) in order to establish a wireless network connection with your Samsung Smart TV. 

This guide by Fixwebnode will walk you through the right steps to establish WiFi Network connection using your Samsung TV.

What you will need:

• Your Samsung Smart TV.
• The remote control for your Samsung Smart TV.
• The SSID and password for your WiFi network.

Locate the label of the default credentials at the back of your wireless router/gateway. 

If not, take a look at the documentation that comes with the device. 

To solve the issue of your Wireless Network name (SSID) and Key, it would be best to get in touch with your Internet Service Provider (ISP) or Router OEM. 

Moreover, the setup sheet of your ISP may have the credentials.

How to Connect your Samsung Smart TV to Wi-Fi Network ?

• Start by pressing the Home button on your remote.
• Next, go to Network.
• Select Network Settings.
• Now Select Open Network Settings.
• Select Wireless to take you to the wireless section.
• Now, find your Wi-Fi network name from the list.
• Here, type in the Password (if prompted), select Done.
• Congratulations, your Wi-Fi has been connected!

Troubleshooting tips for resolving Samsung Smart TV WiFi connection issues

1. Check the router and modem. Make sure that the router and modem are turned on and that the cables are properly connected. You can also try restarting the router and modem by unplugging them for 30 seconds and then plugging them back in.

2. Check the distance between the TV and the router. The TV should be within 15 feet of the router for the best signal strength. If the TV is further away, you may need to use a WiFi extender or powerline adapter to boost the signal.

3. Check the WiFi network name and password. Make sure that you are entering the correct WiFi network name and password when you try to connect the TV to the internet.

4. Delete the saved WiFi network from your TV and reconnect. Go to the Network Settings on your TV, find your WiFi network and delete it. Then reconnect by entering your network name and password again. This can refresh the connection.

5. Reset the network settings on the TV. This will erase all of the saved WiFi networks and settings, so you will need to re-enter the network name and password. To reset the network settings, go to Settings - General - Network - Reset Network.

6. Update the TV's firmware. Samsung regularly releases firmware updates for their TVs, which can sometimes fix WiFi connection issues. Outdated software / firmware can sometimes contribute to WiFi connectivity problems. Check if there are any updates available for your TV and update if possible. Updates often contain connectivity and network fixes. To check for a firmware update, go to Settings - Support - Software Update.

7. Perform a factory reset on the TV. This is a last resort, but it can sometimes fix WiFi connection issues that cannot be resolved by other methods. To perform a factory reset, go to Settings - Support - Self Diagnosis - Reset Smart Hub.

8. Restart your Samsung Smart TV. A simple restart can fix many issues. Unplug the power cable for a few minutes and then plug it back in. This will restart your TV and the built-in WiFi module.