WiFi does not work after Factory Resetting

Blank

Hello,

I have factory reset my phone to clean it. Since then, my WiFi does not seem to work. But I've been able to download and install apps through Wi-Fi, but when trying to do some research on vanadium or log into apps I have to go through 5G, otherwise It can't resolve DNS. Is it an issue of GraphenOs or my WiFi itself ?

I precise that on other device (smart TV and computer) everything work fine while connected to my home WiFi

de0u

__Blank__ When trying to do some research on vanadium or log into apps I have to go through 5G, otherwise It can't resolve DNS.

What is the exact text of an error message that has been received?

Is a VPN client in use? If so, which?

Has a private DNS server been set?

Blank

de0u hello I have fixed the issue. (Sorry I will changed to solve).

But basically, when trying to connect to some apps account, I got an error message involving "unable to resolve hostname". And when I tried to go on websites using Vanadium I had an unreachable host error message.
There was no VPN involved.

What I did : forget the Wi-Fi and reset Wi-Fi setting within GraphenOs, did not work multiple times before, but then I factory reset my Wi-Fi hotspot and logged again to my Wi-Fi and since it's working again.