Samsung Galaxy Note 3 was released in October 2013. It is Samsung’s most powerful device at the moment. It has a 5.7″ display with a resolution of 1920×1080 and 386ppi. It is powered by a Quad-core 2.3GHz Qualcomm processor and 3GB RAM. It has 16/32/64 GB storage options. It also has a 13MP camera with 1080p video recording capability and a 3200mAh battery.
Galaxy Note 3 recently received the official Android 4.3 update from Samsung with KitKat expected to release soon. However you can still update Note 3 to Android 4.4 via custom ROMs. There is an AOSP ROM available for the Note 3 which contains all the features of Android 4.4. Follow the instructions given below to install AOSP ROM running on Android 4.4 on the Galaxy Note 3.