| Hardware and OS | HTC One (M8i) | |
| Operating system | Android 5.1 (Lollipop); Sense UI 7 | |
| Processor | Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53) | |
| Chipset | Qualcomm MSM8939 Snapdragon 615 (28 nm) | |
| Internal memory | 16GB 2GB RAM, 32GB 2GB RAM | |
| External memory | microSDXC (dedicated slot) | |
| GPU | Adreno 405 | |
| Display | HTC One (M8i) | other phones |
| Size | 5.0 inches, 68.9 cm2 | |
| Resolution | 1080 x 1920 pixels, 16:9 ratio | |
| Type | Super LCD3 capacitive touchscreen, 16M colors | |
| Protection | Corning Gorilla Glass 4 | |
| Main Camera | HTC One (M8i) | other phones |
| Camera | 13 MP, AF
2 MP, (depth) | |
| Features | Dual-LED dual-tone flash, panorama, HDR | |
| Video | 1080p@30fps | |
| Selfie camera | HTC One (M8i) | other phones |
| Camera | 5 MP | |
| Video | 1080p@30fps | |
| Connectivity | HTC One (M8i) | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 - EMEA, Asia | |
| 4G Network | LTE band 3(1800), 7(2600), 8(900), 20(800) - EMEA | |
| Bluetooth | 4.1, A2DP, aptX | |
| CDMA | LTE band 1(2100), 3(1800), 7(2600), 8(900), 28(700) - Asia | |
| GPS | Yes, with A-GPS, GLONASS | |
| NFC | Yes (market/operator dependent) | |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | |
| Technology | GSM / HSPA / LTE | |
| USB | microUSB 2.0 | |
| WLAN | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | |
| Multimedia | HTC One (M8i) | other phones |
| 3.5 mm Jack | Yes | |
| Loudspeaker | Yes, with stereo speakers | |
| Battery | HTC One (M8i) | other phones |
| Capacity | Non-removable battery | |
| Design | HTC One (M8i) | other phones |
| Colors | Gunmetal Gray, Glacial Silver, Amber Gold | |
| Weight | 160 g (5.64 oz) | |
| SIM | Nano-SIM | |
| Features | HTC One (M8i) | other phones |
| Sensors | Accelerometer, proximity, compass | |
