Digging around the internet today, I found a small story about a patch that was released to allow Fring calls using Edge/3g on the latest fring for the iPhone. Head to Google and you should find what you're looking for.
I tested it personally here in Rome with my SkypeOut and can say it works rather well. Calls over 3g have a small 1 second lag while Edge has a greater lag (3 seconds or so). I'm not sure of battery life yet, but a 10 minute call uses about 3 MBs (up and down total) of data.
Now, my iPhone is that much more amazing. Unlimited calling to/from the US with my data plan.
Enjoy.
I tested it personally here in Rome with my SkypeOut and can say it works rather well. Calls over 3g have a small 1 second lag while Edge has a greater lag (3 seconds or so). I'm not sure of battery life yet, but a 10 minute call uses about 3 MBs (up and down total) of data.
Now, my iPhone is that much more amazing. Unlimited calling to/from the US with my data plan.
Enjoy.