The Super LCD displays on both One models are superb. Pixel density and screen size are technical advantages for the senior One, but they're not sufficiently better to be noticed in day-to-day use.
HTC has kept its so-called zero-gap aluminum construction almost unchanged. The differences are very small: the camera flash and rear mic have been repositioned, a small strip of white plastic has been removed, and the Beats logo is now monochromatic.
The One mini has two volume keys in the place of the single rocker on the One. There's also more of the white plastic framing the display, with a glossy finish on the mini and a matte surface on the original One.
Physical differences between the One and One mini can be difficult to identify. In this case, the mini's greater reliance on plastic makes it look slightly less sophisticated than the metallic One.
Even the rows of microdrilled speaker grilles are the same: four on each handset. The One mini has a lower-resolution front-facing camera, but otherwise retains all the usual sensors.
HTC's unorthodox placement of a Home Android key to the right of center is reproduced on the mini.
The greater resolution of the One is offset by the browser scaling content to fit the screen.
Under the aluminum hood, HTC has opted against including NFC and optical image stabilization for the UltraPixel camera. Neither could fit within the smaller dimensions of the mini.
The One mini may not look that much smaller than the One, however its ergonomics mark a notable improvement over the original.
HTC really did its utmost not to stray from the signature look of the original One.
The One's IR blaster, craftily integrated into the power button, is not included in the One mini.
You'll find little difference in bezel size between the two phones.
The BoomSound stereo speakers are well positioned for clear audio output on both phones.