Using IPhone, DU isn't "tethered"

[EarlG]

2. Hmm

I've taken pretty significant steps to try to prevent this in the code and on my iPhone I don't experience the problem... unfortunately I was going to suggest all the things you already tried.

I know you already restarted your phone but maybe try just unloading Safari... while looking at the app do a slow swipe up from the bottom of the screen and then flick the Safari tab off the top of the screen. Then open it up again and go to DU.

What happens if you try rotating the phone to landscape position? Does it do the same thing?