Model: Apple A1688 (iPhone 6S) / A1687 (iPhone 6S Plus)
Processor: A9 chip with 64-bit architecture
Display: Retina HD display
4.7 inches / 1334 x 750 / 326 PPI (iPhone 6S)
5.5 inches / 1920 x 1080 / 401 PPI (iPhone 6S Plus)
Cellular Bands:
CDMA EV-DO Rev. A (800, 1700/2100, 1900, 2100 MHz)
UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
TD-SCDMA 1900 (F), 2000 (A)
GSM/EDGE (850, 900, 1800, 1900 MHz)
FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 27, 28, 29)
TD-LTE (Bands 38, 39, 40, 41)
Wireless:
802.11a/b/g/n/ac Wi-Fi with MIMO
Bluetooth 4.2 wireless technology
NFC
Battery life:
iPhone 6S
Up to 14 hours 3G talk time
Up to 10 hours 3G or LTE internet usage
Up to 11 hours WiFi internet usage
Up to 10 days standby time
iPhone 6S Plus
Up to 24 hours 3G talk time
Up to 12 hours 3G, LTE, or WiFi internet usage
Up to 16 days standby time
Notes:
Sprint Band 41 Carrier Aggregation
Full Sprint RRPP capability
Wi-Fi calling
No Sprint VoLTE capabilities
No SVLTE (Spark devices don't support SVLTE)