Which iPhone 5 model numbers do I have (A1428 / A1429)?

Which iPhone 5 model numbers do I have (A1428 / A1429)?

The A1428 model iPhone 5 is the Canadian and US AT&T network GSM iPhone, including broad support for UMTS/HSPA+DC-HSDPA (frequencies 850, 900, 1900, 2100 MHz), GSM/EDGE (frequencies 850, 900, 1800, 1900 MHz), and LTE bands 4 and 17.

The A1429 iPhone comes in two different flavors, one CDMA and one GSM. The GSM model is designed to support LTE in Asia (including Hong Kong, Japan, Singapore, and South Korea). This GSM iPhone will also work on LTE in Australia, Germany, and the UK on bands 1, 3, and 5.

The CDMA version of model A1429 works on Sprint’s and Verizon’s LTE networks in the US, along with the KDDI network in Japan on bands 1, 3, 5, 13, and 25. The CDMA version also supports GSM bands, making the CDMA iPhone 5 compatible with GSM networks. However, the CDMA A1429 will not support LTE on GSM networks in the US.

Full specs from Apple:

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)

GSM model A1429: UMTS/HSPA+/DC-HSDPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz); LTE (Bands 1, 3, 5)