@Sayedul 

Thanks for your requesting, while I'm sorry to tell you that the adapter and smart phone cannot be satsified at the same time cause the adapter does not support band 4 which is supported by the phone only. 

The wifi band supported by the adapter relates to the country version, it should be EU version for the T4U sold in your country, that is the reason why it does not support band 4. 

You can verify whether you can update the OS version of the smart phone to enlarge the wifi bands supported; 

Good day. 

@Sayedul 

Thanks for your reply, glad to hear that you figured it out.

May I know how did you do to make your phone compatible for all 5GHz network bands? 

Meanwhile, I'm sorry to tell you that  there is no method to make the Archer T4U support band 4 yet. You can wait for the updates. 

Good day. 

@Sayedul 

Thanks for your reply, it helps a lot.

Now you can enjoy the wifi network connection.

If need more help, please let us know.

Best regards.