Nowhere else to put this as there is no ZTE forum but the phone comes with Lollipop. Can a mod please move if appropriate?
The ZTE Blade S6 is a nice budget device. Compared with the HTC Desire 620, (which is also a new device and has the same size screen) it has a 16GB ROM versus 8; 2GB RAM versus 1; Octacore 64 bit SD615 versus a SD410. Lollipop versus Kitkat. It is smaller, lighter, thinner and makes more use of the 5" by not having any on-screen buttons. The display is better, the cameras are better. No competition, really, and the devices cost exactly the same. The HTC is also laggy which isn't good for a device just released a few weeks ago, and it will probably remain on KitKat forever.
Z3 Compact...Blade S6...HTC Desire 620
Additionally, the screen is one of the best 720p LCDs I've seen on a phone, better than the Z3 Compact.
The ZTE Blade S6 is a nice budget device. Compared with the HTC Desire 620, (which is also a new device and has the same size screen) it has a 16GB ROM versus 8; 2GB RAM versus 1; Octacore 64 bit SD615 versus a SD410. Lollipop versus Kitkat. It is smaller, lighter, thinner and makes more use of the 5" by not having any on-screen buttons. The display is better, the cameras are better. No competition, really, and the devices cost exactly the same. The HTC is also laggy which isn't good for a device just released a few weeks ago, and it will probably remain on KitKat forever.

Z3 Compact...Blade S6...HTC Desire 620
Additionally, the screen is one of the best 720p LCDs I've seen on a phone, better than the Z3 Compact.