Could you explain this? This chart* would suggest that, while LTE bands are shared between the CDMA model and the non-North America GSM model, none of the models are both GSM and CDMA capable and therefore are not "worldphone capable". I would love to be wrong about this so please elucidate the situation if you are able.

*http://www.apple.com/iphone/LTE/

The CDMA model does GSM as well: http://www.apple.com/iphone/specs.html

CDMA model A1429: CDMA EV-DO Rev. A and Rev. B (800, 1900, 2100 MHz); UMTS/HSPA+/DC-HSDPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz); LTE (Bands 1, 3, 5, 13, 25)

The CDMA iPhone 4S was the same (minus LTE), it has a SIM card slot for global roaming and everything.

Thanks for the info.