There are two versions of A1633/A1688. Please note the version you need in the order. We will ship as required, if there is no choice, we will send A1688

Apple iPhone 6s
Released 2015, September 25
143g, 7.1mm thickness
iOS 9, up to iOS 15.5
 128GB storage, no card slot 
4.7" 750x1334 pixels
12MP 2160p
2GB RAM
Apple A9
1715mAh Li-Ion
2G bands GSM 850 / 900 / 1800 / 1900
  CDMA 800 / 1700 / 1900 / 2100
3G bands HSDPA 850 / 900 / 1700 / 1900 / 2100
  CDMA2000 1xEV-DO
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29 - A1688
  1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41 - A1687

Battery Type Li-Ion 1715 mAh, non-removable (6.91 Wh)
Stand-by Up to 240 h (3G)
Talk time Up to 14 h (3G)