Will i337 model work in Japan (Tokyo)?

[SpookDroid]

Hi guys,

I was wondering if any of you know if the AT&T version of the Galaxy S4 (i337) would work with a Tokyo SIM card... I'm traveling there for a few weeks and would really hate to be left at the mercy of free WiFi spots. I called my carrier (I'm not on AT&T but I know they use the same phone models) and they said I could only get voice, not data, if I purchased a roaming plan from them, so I'm wondering if that's because they don't have any data agreements with Japanese carriers or because my phone won't have working data over there at all.

Any ideas? Thanks!

 

[friedtators]

Phone network in Japan

here are the networks

 

[SpookDroid]

Well, thanks, but still doesn't really answer the question hehe Will my S4 work with a Japanese SIM or become a glorified WiFi phone there?