"Starting with the housing, HTC completely redesigned the device?s case. It looks similar from afar but I assure you, there are plenty of important differences.
First, there is much more metal. Last year?s HTC One case was 70% metal, with plastic around the outer edges of the device and on the back where the antennas were. This year?s model, however, is 90% metal.
The aluminum on the back of the new HTC One wraps around to the sides and bottom now, with the only remaining plastic found in inserts on the back and top of the phone. The face of the phone is mostly glass, as it was before, but it?s actually quite different on the M8 compared to the M7."
If only we could make a completely metal phone. That would be perfect.