I am a retiring military guy after 30 yrs and plan to travel a lot of countries outside of the US. There are three versions of the iPhone 5 and I'm trying to figure out which would be best to get to facilitate say, arriving in Singapore (or where ever) and going to the local version of the 7-11 and buying a prepaid sim chip (the new miniature one I guess) and plugging it into my iPhone. I know I'll have to pay full price for an unlocked version but that's the cost of freedom.
Which version of the three would be the best for worldwide flexibility?

Moderator
CNET Staff
Samsung Staff
Dell Staff