Phone no change to data mobile when wifi have not internet access

[Pezhan]

Hi guys!

Some time ago I purchased a device to use WirelessAndroidAuto in my vehicle. I tried connecting to the device, everything is fine, it connects via Bluetooth and Wifi, but it turns out that the phone is without an internet connection.
I check the phone, it is indeed connected to the wifi of the WAA dongle, it is connected via bluetooth and it has a 4G connection available. In the Wifi settings, Wifi+ is activated, but for some reason the phone still prefers Wifi for internet access (where clearly there is no internet connection).
I activated my phone's programmer mode to activate the option of "Mobile data always on" but it had no impact.
I have searched for official information from Huawei but I can't find anything that can help me, and the official support only told me to activate Wifi+, which was already active. I also read to put a proxy or remove the default gateway to the Wi-Fi connection to the dongle, but it was not successful either.
Can anyone help me or have any experience with this?
I emphasize that the problem is my phone, since I tried with a Samsung phone and everything was fine, the phone has a connection via mobile data while it is connected to the dongle's wifi.

 

[SpookDroid]

Have you tried removing the Android Auto connection from both your phone and dongle and re-pairing them?

 

[Pezhan]

Have you tried removing the Android Auto connection from both your phone and dongle and re-pairing them?

Yes, I do. I removed the connection between the phone and the dongle (here, where the phone does not connect to the dongle's Wi-Fi, there is an internet connection via mobile data), I removed the pairing between the device and the phone (via Bluetooth), reconnected them and nothing , the phone has no internet connection.
The connection between the dongle and a Samsung phone is made without any problem, at the moment of establishing WirelessAndroidAuto the phone has internet via mobile data, but for some reason, I think there is an option at the OS level that prevents this change of data. I would need to try a home/router-type Wi-Fi network and see if Huawei has the same symptom and does not have access to the Internet via mobile data