@LarzoTP 

Good day,

Thank you very much for your time and patience.

Sorry for the delay.

For your case, could you please help me check the following:

1. Since the 725N only supports 2.4ghz, please make sure the hotspot based on the 4G is on the 2.4ghz as well?
2. Are you able to change the wireless channel on the 4ghz, such as channel 1/6/11?
3. Could you please refer to this link to help me check the system info and driver info about the computer: https://www.tp-link.com/support/faq/2722/

Thanks a lot.

@Kathy_Z 

Here are the answers to your questions..

1. Yes I keep the hotspot too on 2,4Ghz

2. Are you able to change the wireless channel on the 4ghz, such as channel 1/6/11? -------> Please explain me how to do this.

3. Driver version : 1030.29.1102.2017 & System info is below

Please let me know in case any other info needed.

@LarzoTP 

Hello, thanks for getting back.

Does this WN725N adapter can "see" other 2.4GHz wireless networks except that from the phone? If the WN725N can "see" other networks but just cannot see the hotspot of the Redmi 9 prime 4G, I'm afraid we cannot provide any more suggestions on the adapter itself. From what I can tell, it might be the 2.4GHz wireless channel of the hotspot that is not compatible with the adapter.

We hope you could understand it, good day.

@Kathy_Z 

TL-WN725N is unable to "see" other networks as well most of the times whereas those networks are

detected by the phone. Very less often the networks are shown in TL-WN725N. Please provide me the

updated driver in case a new driver is available.

Thanks

@LarzoTP 

You may check if you can update with the below last driver:

https://static.tp-link.com/2020/202006/20200601/00015960-RTLWlanU_WindowsDriver_1030.38.0712.2019_Drv_3.00.0032.L.zip

@Kevin_Z 

Thanks for the driver. Now the problem is resolved.

Update :  Sorry, the problem still persists. The TL-WN725N is able to detect the phone only if the phone is connected to some Wifi.

@LarzoTP 

Hi, glad to know it works.

Just let us know if you have any other inquiries.

Good day~

@Kevin_Z 

Sorry, I checked that the problem still persits. The TL-WN725N is able to detect the phone only when the phone is connected

to some  Wifi. This was the same problem prior to updating the driver. Updated my last reply accordingly.

Is there any updated firmware for TL-WN725N?

@LarzoTP 

You probably need to change the AP Band in your phone Wi-Fi hotspot setting. Someone else also had the same issue with another phone but changing AP Band resolved it, you can give it a go.