But don't They have something to Make the iPhone Into a world phone as well? I could've sworn I read something about that
The iPhone 5 has three versions:
US:
GSM model A1428: UMTS/HSPA+/DC-HSDPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz); LTE (Bands 4 and 17)
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)
World:
GSM model A1429: UMTS/HSPA+/DC-HSDPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz); LTE (Bands 1, 3, 5)
The CDMA A1429 does have the ability to talk on GSM (NON-LTE) bands. You simply have to install a GSM SIM to use that feature since that version comes unlocked. But Verizon doesn't offer any GSM frequencies for HSPA+ dual talk/data operations.
BTW the iPhone 4S was also a GSM and CDMA setup. But it was 100% locked unless you specifically requested an unlock for international travel.