Why iphone7 does not support band7? Model A1778

Cellular and Wireless on iPhone 7

Model A1660

• FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30)
• TD-LTE (Bands 38, 39, 40, 41)
• TD-SCDMA 1900 (F), 2000 (A)
• CDMA EV-DO Rev. A (800, 1900, 2100 MHz) 
• UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
• GSM/EDGE (850, 900, 1800, 1900 MHz)

Model A1778

• FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30) 
• TD-LTE (Bands 38, 39, 40, 41)
• UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) 
• GSM/EDGE (850, 900, 1800, 1900 MHz)