First of all, there is the Nubia Z11 that you can see right above. It will arrive with a 5.5” Full HD display, a 1.5 GHz octa-core processor, 4GB of RAM, 32GB of internal memory, a microSD memory card slot for expansion purposes, a 16MP shooter at the back with LED flash, an 8MP front-facing camera, and a 2,900 mAh battery, all of it running on Android 5.1.1 Lollipop.
As for the other device, it would be a larger version that justifies carrying the name Nubia Z11 Max, where you will be able to make use of a 6” Full HD display, 4GB of RAM, 64GB of internal memory, a similar front and back camera configuration as the Z11, chugging along to a 4,000 mAh battery.