To add a bit more - Apple CarPlay have also stopped working. One last resort before going to the repair shop was to erase the phone and then install an older backup from the computer. Turned out to be a bit hard, as it tries to connect to apple to remove it from my account, and as the network isn't working, the erase procedure fails with "Verification failed".

Since yesterday morning, I have issues with WIFI on my iPhone 11 with iOS 14.6 I can connect to the Wifi but I don't get the wifi icon at the top of the display and most applications claim "No internet Access". Despite this, some things load correctly, probably via 4G. So text works fine for example in messenger, but not pictures. I have rebooted the phone, I have done a couple of HW resets and I have done a reset of the network settings. No change. I have tried two different wifi networks, so it is not router related (different types of routers). Other equipment including my Macbook and my iPad as well as the rest of the family has no issues, only my iPhone 11. As there is no shell available in iOS, it's hard to find out what is really going on. Any suggestions, or do I need to backup to my computer and make a factory reset and if that doesn't help, take it in for repair ?? Thanks