Which iphone 4 should I buy in Bangkok?

[airport5]

I'm moving to Bangkok and want to purchase an Iphone 4. Also I want to use it in Japan when I move there. Which one should I buy? ATT version?
**Please keep in mind I'm a newbie and don't know anything about SIM cards.

 

[PsstGreek]

Your best option would be to buy a factory unlocked iPhone.

 

[iPhoneCollector]

The wight one

 

[ImStrapped]

I'm moving to Bangkok and want to purchase an Iphone 4. Also I want to use it in Japan when I move there. Which one should I buy? ATT version?
**Please keep in mind I'm a newbie and don't know anything about SIM cards.

you definitely want a unlocked one!
Japan is beautiful, have fun