@hydro
1. A1660: The iPhone 7 A1660 is considered the global phone as it is compatible with both GSM and CDMA networks. This model is available in the United States, Puerto Rico, Hong Kong and China. In the US,
you can get the A1660 on Sprint and Verizon, when you buy the SIM-free version, or when you buy the locked AT&T phone at BestBuy.
Cellular bands:
FDD-LTE bands 1 (2100 MHz), 2 (1900 MHz), 3 (1800 MHz), 4 (AWS), 5 (850 MHz), 7 (2600 MHz), 8 (900 MHz), 12 (700 a MHz), 13 (700c MHz), 17 (700b MHz), 18 (800 MHz), 19 (800 MHz), 20 (800 DD), 25 (1900 MHz), 26 (800 MHz), 27 (800 SMR), 28 (700 APT MHz), 29 (700 de MHz), 30 (2300 WCS)
TD-LTE bands 38 (TD 2600 MHz), 39 (TD 1900 MHz), 40 (TD 2300 MHz), 41 (TD 2500 MHz)
TD-SCDMA 1900 (F), 2000 (A)
CDMA EV-DO Rev. A (800, 1700/2100, 1900, 2100 MHz)
GSM/EDGE (850, 900, 1800, 1900 MHz)
UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)