Moreover, 13MP front - facing camera with 22 mm wide angle lens and 1/3.06 ″ Exmor RS for mobile image sensor lets you capture sharper selfies even in low - light conditions. (gadgetsin.com)
The device offers an 8 MP front camera with f / 2.4 wide angle lens and 1/4 inch Exmor R 120 - degree mobile image sensor while offering a 23 MP Exmor RS camera sensor of 1/2.3 inch size and f / 2.0 wide angle lens. (dealntech.com)
This is largely due to the advances made in mobile image sensors, mainly thanks to Sony. (slashgear.com)