Wifi module and 16.4.1

We are developing a device with a built-in wifi module and a system that allows you to change the settings of that device from your iPhone via wifi. When iPhone 16.4.1 connecting to the access point of the wifi module, the connection between the terminal and the wifi module was often interrupted. At that time, the wifi module access point is listed as "No internet Connection" on the wifi setting screen of the iPhone. There was no interruption on devices prior to 16.4.1, and after updating to 16.4.1(a), there was no interruption. Can anyone tell me why there was an interruption in 16.4.1, and why the interruption disappeared after updating?

Additional Information: The interruption occurs in 16.4.1(a) and 16.5 recently.

I understand that there is no guarantee that en0 is the primary Wi-Fi interface, but if, for example, en0 and en2 each have data, how best to determine which one is the Wi-Fi interface?

I understand that there is no guarantee that en0 is the primary Wi-Fi interface, but if, for example, en0 and en2 each have data, how best to determine which one is the Wi-Fi interface?

Wifi module and 16.4.1
 
 
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