| Global Score | |
| 77.7 | 87.4 |
| Basic Information | |
| HTC | Samsung |
| Android 5.0 | Android 5.0 |
| 2015-03-01 | 2015-04-11 |
| 5.69 x 2.74 x 0.38 inches | 5.65 x 2.78 x 0.27 inches |
| 5.54 ounces | 4.87 ounces |
| Black, Gold, Gray and Pink | Black, Blue, Gold and White |
| Aluminium | Aluminium and Glass |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 178.00 | $ 252.00 |
| Display / Screen | |
| 5 inches | 5.1 inches |
| 1080 x 1920 pixels (Full HD) | 1440 x 2560 pixels (Quad HD / 2K) |
| S-LCD 3 | Super AMOLED |
| 441 pixels per inch | 576 pixels per inch |
| Capacitive, Multi-touch | Capacitive, Multi-touch |
| 9.3 | 9.9 |
| Performance | |
| Qualcomm Snapdragon 810 MSM8994 chipset | Exynos 7 Octa 7420 chipset |
| 64-bit ARM Cortex-A57 (Quad-Core 2000 MHz + Quad-Core 1500 MHz) processor | 64-bit ARM Cortex-A57 (Quad-Core 2100 MHz + Quad-Core 1500 MHz) processor |
| 3 GB (800 MHz) RAM | 3 GB (1600 MHz) RAM |
| Adreno 430 (600 MHz) GPU | Mali-T760 MP8 (650 MHz) GPU |
| 9.99 | 10.08 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSD, microSDHC, microSDXC (up to 128 GB) external memory slot | No SD card slot |
| 8.12 | 10.1 |
| Camera | |
| 20.00 MP + 4.00 MP | 16.00 MP + 5.00 MP |
| f/2.20 aperture | f/1.90 aperture |
| 27.80mm focal length | 28.00mm focal length |
| 0.42 inches (1/2.4") sensor | 0.38 inches (1/2.6") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 10.12 | 10.01 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA, HSUPA, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA, HSUPA, UMTS, EDGE, GPRS and GSM |
| Nano SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 2840mAh Li-Polymer Battery | 2550mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 391 hours standby time 25.4 hours talk time | -- |
| 4.8 | 4.56 |
| Other Features | |
| Bluetooth 4.1 | Bluetooth 4.1 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | Infra-red port |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Galaxy S6 has a general score of 87.4, which is better than HTC One M9's 77.7 overall score. These devices have the same Android 5.0 operating system, so you shouldn't see any difference in that aspect. Galaxy S6 is a somewhat lighter and notably thinner cellphone than the HTC One M9, even when both were released with only a couple of months difference.
The Galaxy S6 features just a bit better looking screen than HTC One M9, because it has a greater display density, a better resolution of 2560 x 1440px and a little larger screen. Galaxy S6 features a lot bigger memory to install applications and games than HTC One M9, because although it has no SD card slot, it also counts with 128 GB internal storage.
The Samsung Galaxy S6 features a bit faster CPU than HTC One M9, and although they both have a 3 GB RAM, a 64-bit processor and a Octa-Core processor, the Samsung Galaxy S6 also has a better graphics processing unit. The HTC One M9 features a little bit better camera than Galaxy S6, because although it has a smaller diafragm aperture which is not recommended for low light photography, and they both have the same 3840x2160 (4K) video quality and the same video frame rates, the HTC One M9 also counts with a larger sensor capturing more light and vivid colors and a camera with a higher resolution.
HTC One M9 counts with a bit better battery performance than Samsung Galaxy S6, because it has 2840mAh of battery capacity.
Galaxy S6 is way more expensive than HTC One M9, but you can get a better phone for that extra money.
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