I am new to iPhones and have just got an iPhone5 as upgrade from an old Android phone. It was set up as brand new and I didn't use any tools to transfer contacts, photos or settings. I am able to connect to my home WiFi network fine and I have connected it to my parents wifi as well. The issues seems isolated to corporate/public/subscription wifi connections (apologiues I don't know the correct name) where on connection a popup is supposed to appear to let me type in a username and password to enable the device to connect to the internet. When I connect to the network the WiFi symbol appears a few moments later but no login box appears. If I go to Safari there is no redirect to the page either instead the browser just hangs until eventually displays a message saying no internet connection. Chrome doesnt work either. I have tried switching the entire phone off and on again, I've "forgotten" the network a dozen times, I've turned the wifi on and off again. I've cleared the Safari cache and ensured that autofill is off. I've also reset the network settings to try again from scratch and yet it still doesnt work. Please help.