http://www.puffinbrowser.com/welcome/iOS/puffin/
https://play.google.com/store/apps/details?id=com.cloudmosa.puffin&hl=en
I used this browser on my iPhone 4 to chat and even DUEL on DN! The bright side is that DN can now be accessed and used via mobile. Downsides are that the full version costs $3 (imo its a great investment). The downside to dueling is that its hard to multitask with chatting and dueling (not to mention you have to be very careful with selecting options, making the zoom option vital). Truth is, this is the best out there in terms of mobile access to flash. We won't see any mobile dueling until DN decides to either make an app, make theprogram recognize mobile devices (aka mobile optimization) or wait for HTML5. All of these are tedious and a large project in of themselves. It will be a while (or never) until any of this happens.
I conclude by saying that this browser is definitely a smart investment (especially the data packaging...bastard ISPs love to suck your mullah).