It would be very comfortable if tap on the fingerprint sensor act as back button. It was there in my previous phone and it was very convenient. I really miss that.For a 6.4 inch phone it's really hard to hit back button at the lower corner.
walter.costajuniorMy Z6 have a problem with the proximity sensor. It is stuck in ON Mode. I disable the sensor in Call menu, but this disable only in calls. Other times The system think that a object in sensor and camera not flip. I dont use any case...