how to force roaming on iphone 4?

[finbarqs]

is there an app for that? Sometimes, I'll be in Verizon friendly zones, but not sprint. I want to force this phone to roam all the time, so it doesn't eat up my battery on sprint!

 

[TakeNoPrisoners]

I don't know how to force it on iPhones but I will say that when I had Sprint and I would roam on Verizon you will not get any higher then 1x speeds for data.

Just something to be aware of.