elcpu, sorry, must be annoying to you to see plenty of people with the same problem.
I meant I did a complete reset, erasing all from the phone, but first did a backup,
then I restore the phone from this backup. I did that at least 5 times, and reseted network 50 times....
I'll keep trying your steps, and hopefully not have to reach number 9.
Now I'm doing another restore from a backup. could even connect to wifi now, and could change the DNS.
it appears ok... let's see if it remains stable, I'll let you know. thank you very much for now, you really did help a lot.
When whe are so desperate like I was, we make some mistakes, the secret is to take a deep breath and go for it.🙂