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The One M7 was HTC’s first flagship, a studding handset with a better design than all of its siblings. The Taiwanese multinational manufacturer was overwhelmed by the success of this device and decided to bring a successor, which had an amazing brushed metal look. The things haven’t changed much on the One M9, the latest model, because HTC focused more on the internal parts and the primary camera. Below, yoou’ll see the evolution of all three devices.

Designs, Dimensions and Displays

The first HTC One came with a smaller Super LCD3 display sized at 4.7-inch, but it was among the first flagships to support a Full HD resolution with 469 ppi. Its body measured 144.6 x 69.7 x 9.6 mm, resulting in a total weight of 157 grams and the available color options were Black, Silver, Red, Blue and Gold. The chassis was made of aluminum and had two thin strips at the top and at the bottom (their role was to hide the radio antennas) and the back was curved on the edges.

Then, HTC pushed the limits further and increased the size of the screen up to 5-inch, but they kept the resolution and decreased the pixel density to 441ppi. Even if the body became bigger (146.4 x 70.6 x 9.4 mm with a weight of 160 grams), the design hasn’t been changed. Only the colors have been replaced with new ones: Gunmetal Gray, Glacial Silver and Amber Gold.

The latest One M9 is almost identical to the M9, but its dimensions suffered a small change, as now, the phone measures 144.6 x 69.7 x 9.6 mm and weights 157 grams. This means that it’s 6 percent taller, 3 percent wider and 10 percent heavier than the first M7. The other changes involve a two tone finish, such as bronze-gold sides, while the front and back have a silvery finish.

Also, the One M7 had capacitive keys below the screen, while the new models have onscreen navigation buttons. But all three devices have dual front facing speakers with a decent volume and accuracy.


The first One M7 was powered by a 32bit Qualcomm APQ8064T Snapdragon 600 quad-core 1.7 GHz Krait 300 processor, which was paired with Adreno 320 graphics and 2GB of RAM, and it had unexpandable storage with capacities of 32GB and 64GB.

The One M8 came with identical RAM, but the internal memories of 16GB and 32GB supported expansion up to 128GB, Also, the device received a newer 32bit Qualcomm MSM8974AB Snapdragon 801 quad-core Krait 400 processor, which was available in two variants of clock speeds: 2.3GH for US/EMEA and 2.5GHz for Asia, China. Also, the graphics have been upgraded to Adreno 330.

The One M9 made the jump to 3GB of RAM and kept only one variant of internal storage: 32GB, expandable up to 138GB. However, the performance of the device was significantly improved, because it was used the new 64bit Qualcomm MSM8994 Snapdragon 810 processor with four cores running at 1.5GHz and four cores running at 2GHz, which were backed by more powerful Adreno 430 graphics.


The One M7 was the first smartphone with an Ultrapixel rear camera, and its resolution was 4MP. Surprisingly, it supported optical image stabilization, but it also featured a 1/3” sensor size and 2µm pixel size. As for the secondary camera, its resolution was 2.1MP.

Even if there were many users who complained against the performance of the Ultrapixel camera, HTC ignored them and equipped the One M8 with a Dual 4MP rear camera with the same sensor and pixel size. Luckily, the front camera received a big improvement, as its resolution was increased to 5MP.

The One M9 moved the famous 4MP camera to its front, while the back camera was upgraded to 20MP, but the OIS feature has been removed.


The original M7 was powered by a 2300mAh battery, but it was small because the body didn’t allow a higher capacity. The successor added 300mAh of juice, while the latest M9 came with a 2840 mAh battery.

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