It has a strong hinge that has been tested for 400,000-fold and unfolded for longevity. Users can use the phone in Hover Mode which enables the usage at angles between 30 and 150 degrees.
They are much better phones all around: very durable, loud, strong hinge, good calculator, etc. If none of my cons matter to you, then OK phone. But if you would be bothered by the cons ...