Some models may require you to reboot the system before the changes take effect. Connect a computer, phone, or tablet to the same network as your Smart TV to test whether the network is working properly. If you're unable to browse the web on the network, the issue may be with your router or ISP.  Try rebooting your Wi-Fi router/access point, as that often resolves network issues. If you're having trouble getting online using any device on the network, contact your ISP for help. If your Wi-Fi router has any sort of MAC filtering set up, you may need to manually add the TV's MAC address to allow it internet access. Here's how to find the MAC address of your Smart TV:  Open the Settings menu on the TV. Select About this TV or Contact Samsung (the option varies by model). Scroll down to find the MAC address, which looks like 6 pairs of letters and/or numbers separated by hyphens (-). If your network is performing fine but your TV isn't able to connect, it could be because of the distance between the TV and the wireless access point. If possible, put both devices in the same room with a clear line-of-sight (no walls or tall furniture between the two). Samsung recommends placing the router within 50 feet of the Smart TV, but the closer the better.  If it's not possible to move closer to the access point, try using a Wi-Fi extender to boost the signal. If you're in an apartment or condo, neighboring units could be using devices that impact your wireless performance. Moving the TV and/or router away from shared walls could help. If the wireless connection isn't working, you can connect your TV to the router with an Ethernet cable. Here's how:  Insert one end of the cable into the port on the back or side of your TV, and another into an available LAN port on your router/access point. Press the Menu or Home button your remote and select Network. Select Network Settings. Select Network Type. Select Wired. Select Connect. If the issue isn't with your internet provider, you may need to update your TV. Since the TV isn't...

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Write a summary of the previous text in Chinese:
关掉智能电视，然后再打开。 确保Wi-Fi是联网的，并且正常运作。 检查Wi-Fi路由器设置。 让无线接入点靠近电视。 尝试有线网络连接。 更新电视固件。