Hi, I've had an iPhone 6 since launch and today it's starting to do something that I've never seen before. A few seconds after waking the phone, I'm getting a white screen with the heading "airport.us"*, followed by the name of my Wi-Fi network and the text "Log In", a button labelled "Done", and the word "Success". This popup will then go away of its own accord if I do nothing. I cannot take a screenshot of this popup. I get the usual "flash" animation, but the picture does not usually appear in Photos. The exception is if I switch to Photos quickly enough, in which case it does appear, but then Photos quits itself and the picture is missing the next time I open it. I haven't heard of any real iOS malware, but this is exceedingly strange. Has anyone else run into this and do you know what could be causing it? *I've seen other things here too, such as "appleiphonecell.com" and "ibook.info".