Right I've searched forums tried few things they dont work. I've got hold of iphone 11 it wont connect to my wifi its connects to the guest wifi no problem. Yet the master wifi nothing at all. It connects but shows no internet. I've separated the 2ghz and 5ghz connections with different names but still no joy. So why does it connect to my guest wifi but not my master wifi I have no issues with other items connecting to the master wifi just this iphone.