The Z1S is the younger brother of the flagship device from Sony, Xperia Z1.
It will be coupled with a smaller 4.3 inches 720 pixel HD touchscreen display compared to the 5 inches 1080 pixel display of the Z1. And it will be hold on by a 2,300 mAh battery, which is 3,000 mAh in the Z1.
However, it's very fortunate to see the same Snapdragon 800 chipset and 20.7 megapixel rear camera with the Z1S. The gadget will also retain the IP58 water-resistance certification.
The Z1S will run on Google's Android v4.3 Jelly Bean OS.
So it's very clear that Sony is in the same path of Samsung and HTC, who have already rolled out a cut-down version of their flagship device, the Galaxy S4 and the HTC One namely the Galaxy S4 Mini and the One Mini respectively.