| Hardware and OS | HTC One E9 | |
| Operating system | Android 5 (Lollipop), upgradable to 6 (Marshmallow); Sense UI 7 | |
| Processor | Octa-core 2.0 GHz Cortex-A53 | |
| Chipset | Mediatek MT6795M Helio X10 (28 nm) | |
| GPU | PowerVR G6200 | |
| Internal memory | 16 GB, 2 GB RAM | |
| External memory | microSD, up to 256 GB (dedicated slot) | |
| Display | HTC One E9 | other phones |
| Size | 5.5" inc | |
| Resolution | 1080 x 1920 px | |
| Protection | To be disclosed | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 69.7% | |
| Display area | 83.4 cm2 | |
| Display aspect ratio | 16:9 (height:width) | |
| Pixel Density | 401 PPI | |
| Colors | 16M | |
| Connectivity | HTC One E9 | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA | |
| 4G Network | LTE | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, DLNA, hotspot | |
| Network | GSM / HSPA / LTE | |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | 4.1, A2DP, aptX | |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS, GLONASS, BDS | |
| NFC | Yes | |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | |
| USB | microUSB 2.0 | |
| Camera | HTC One E9 | other phones |
| Main camera | 13 MP, Single | |
| Specs | 13 MP, f/2.2, 28mm (wide), AF | |
| Features | LED flash, panorama, HDR | |
| Video | Yes | |
| Selfie camera | 4 MP, Single | |
| Multimedia | HTC One E9 | other phones |
| 3.5 mm Jack | Yes | |
| Radio | FM radio | |
| Design | HTC One E9 | other phones |
| Colors | Black, White | |
| Dimensions | 156.5 x 76.5 x 7.5 mm | |
| Weight | 147 g | |
| Battery | HTC One E9 | other phones |
| Battery capacity | 2800 mAh, Non-removable Li-Po | |
| Other | HTC One E9 | other phones |
| Release date | 2015, May | |
| Sensors | Accelerometer, gyro, proximity, compass | |
