This is how you do it - ZTE finally revealed the full spec sheet for the Axon 7s and it's even better than we expected. We knew of the upgrade to Snapdragon 821, but the dual camera on the back was a surprise. The 20MP camera sensor is still on board (1.25µm pixels), but is now joined by a 12MP Sony IMX368 sensor (1µm). It seems that both have a bright f/1.8 aperture, phase detection autofocus and 4K video recording. The front camera hasn't changed (8MP). Besides the slightly faster chipset, the ZTE Axon 7s also gets more RAM than its predecessor - 6GB. It's not quite clear if there...
Source: http://www.gsmarena.com/zte_axon_7s_detailed_dual_camera_bigger_battery_and_snapdragon_821-news-24695.php
