@Kevincon 

Hi

Do you mean that the S24 Ultra device cannot detect 6G Wi-Fi? If so, you could refer to the following link: What if my device failed to detect the 6 GHz Wi-Fi Band
If I have misconstrued your message, please feel free to gently remind me.

  @Joseph-TP 

My device sees 6ghz bands. My device saw the 6ghz band of another wifi7 router in the technology store without any problems.

I wonder if it could be a problem caused by my country, I live in turkey. if so, how does the router know where I live and how can another router open the 6ghz band? sorry for asking so many questions :(

  @Kevincon 

Hi

May I kindly request to double-check the query once more? Is the issue related to the phone's inability to detect the 6G Wi-Fi network, or is it that the available 6G channel is not visible or selectable in the Web management interface?

Additionally, if you purchased the Samsung mobile phone and BE550 locally in Turkey, could you kindly share the store from which you acquired the BE550? Thank you.

  @Joseph-TP 

The problem is that I cannot see the 6ghz channel on the phone. it can be opened in the web interface as shown in the screenshot. my phone came from Saudi Arabia and I bought the router from Vatan Computer in Turkey.

  @Kevincon 

Hi

Thank you so much for taking the time to post the issue on the TP-Link community!

To better assist you, I've created a support ticket via your registered email address, and escalated it to our support engineer to look into the issue. The ticket ID is TKID240840200, please check your email box and ensure the support email is well received. Thanks!

Once the issue is addressed or resolved, welcome to update this topic thread with your solution to help others who may encounter the same issue as you did.

Many thanks for your great cooperation and patience!