Samsung Galaxy S6 duo comes with a new ISOCELL camera sensor with 16MP resolution. The camera is enhanced with optical image stabilization, phase detection autofocus and has a single-LED flash. Quite expectedly, 4K video recording is supported.
The front camera is 5MP, capable of 1080p video capturing.
The new Galaxy S6 and Galaxy S6 edge feature 32GB / 64GB / 128GB storage, non-expandable though. The storage is of the new UFS 2.0 variety, which uses "Command Queue" tech used in SSDs for accelerating the speed of command execution. The end-result is 19,000 input/output operations (IOPS) per second for random reading thats 2.7x faster than the performance of the eMMC 5.0 memory found in the previous crop of flagships.
The all-round connectivity package includes LTE Cat.6, Wi-Fi ac, Bluetooth 4.1, NFC, GPS with GLONASS and Beidou, IR blaster and FM radio. The Galaxy S6 is powered by a 2,550 mAh battery, while the Galaxy S6 egde has a 2,600 mAh unit.
http://www.gsmarena.com/samsung_unpacks_galaxy_s6_and_galaxy_s6_edge_at_mwc_2015-news-11376.php