thank you for your answer.
I'm using a normal nano SIM Card. No e-SIM.
No LTE only mode!
Mobile Data is activated and works fine if there was no reset of network settings.
APNs are visible after reboot.
No VPN or DNS provider. Just normal Internet connection.
I flashed GrapheneOS a couple days ago. Problems began after first reboot. Also Wi-Fi and mobile data are affected. There is no difference. After reboot I have to reset Network settings to get a connection to the Internet.
My Router has no Problem. And normally I use the device mac to get the same IP every time. That works fine.
What do you mean with data server toggled on?
It has to be a General Problem of connectivity I think. Nothing specific to Wi-Fi or mobile data, because both oft them don't work after reboot.
When I try to open some pages in brave Browser there is an error like failed_dns_probe or something like this. I have to take a look again.
I also changed the local DNS oft my home network, but nothing...
I also tried static IP with cloudflare DNS. Nothing!
I played around with the private DNS Option. Nothing helped.
The only thing that helps is to reset the network settings. But after restart I have the same Problem again.
Thanks in advance!