Can a cellular device such as an Iphone 5 be used in space?

Can a cellular device such as an Iphone 5 be used in space?

Sure but you'll have to pay roaming charges…

You'd need a picocell and base station patched to your ground link if you wanted to make regular phone calls. The Wi-Fi would work fine on a local network so you could stream media from a central server or I'm other astronauts. It might be a cost-effective way for people to communicate in a big space station or Mars settlement - retail phones are so much cheaper than any purpose-built hardware, and have so much more capability.

Not sure, but you must have a lot of frequent flier miles to ask.