The apple iPhone 6s comes with a retina HD display of 4.7 inch with 3D touch, along with LED backlight which gives a perfect visualization on the screen with a resolution of 1334×750 pixels. This great quality of colour presentation is also because of the contrast ratio of 1400:1 and one of the unique features of this phone is that it got a fingerprint sensor which also helps in creating high level security through the sensor on its home button. The internal memory of this device 16 GB which is not negotiable.