The Samsung Galaxy Note 4 is the successor to 2013's Note 3. It was presented at the IFA technology fair in early September 2014. The device sports a 5.7-inch QHD Super AMOLED display with S Pen stylus. Two variants are available, one with an octa-core 64-bit Exynos chipset and another with a quad-core Snapdragon 805 chipset. Both versions have 3 GB of RAM and a 16 MP camera with OIS. It has a heart-rate sensor and fingerprint scanner. It was released on ANdroid 4.4 KitKat, before 5.0 Lollipop was released for it.