| Hardware and OS | Sigma Mobile X-treme PQ51 | |
| Operating system | Android 7.0 Nougat | |
| Processor | ARM Cortex-A53, 1300 MHz, Cores: 4 | |
| GPU | ARM Mali-T720 MP1, 600 MHz, Cores: 1 | |
| RAM | 2 GB, 640 MHz | |
| Internal Storage | 16 GB | |
| Memory Card Slot | microSD, microSDHC, microSDXC | |
| User Interface | Yes | |
| Display | Sigma Mobile X-treme PQ51 | other phones |
| Type | IPS | |
| Size | 5.2 inches | |
| Resolution | 720 x 1280 pixels | |
| Colors | 16M | |
| Pixel Density | 282 ppi | |
| Touchscreen | Yes | |
| Protection | Corning Gorilla Glass 3 | |
| Features | Capacitive, Multi-touch, Scratch resistant | |
| Connectivity | Sigma Mobile X-treme PQ51 | other phones |
| 4G Network | Yes | |
| Wi-Fi | b, g, n, Wi-Fi Hotspot, Wi-Fi Direct | |
| GPS | GPS, A-GPS, GLONASS | |
| NFC | No | |
| USB | 2.0, Micro USB | |
| Speed | LTE 800 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz | |
| SIM | Nano SIM | |
| Dual SIM | Nano-SIM | |
| Wireless Charging | No | |
| Camera | Sigma Mobile X-treme PQ51 | other phones |
| Main camera | 12.98 MP (megapixels) | |
| Features | LED | |
| Image | 4160 x 3120 pixels | |
| Selfie camera | 4.92 MP (megapixels) | |
| Multimedia | Sigma Mobile X-treme PQ51 | other phones |
| Loudspeaker | Yes | |
| Handsfree | Yes | |
| Radio | Yes | |
| Video Playback | Yes | |
| Video Out | Yes | |
| Ring Tones | Yes | |
| 3.5 mm Jack | yes | |
| Design | Sigma Mobile X-treme PQ51 | other phones |
| Dimensions | 76 x 148 x 12 mm | |
| Waterproof | No | |
| Weight | 214 g | |
| Battery | Sigma Mobile X-treme PQ51 | other phones |
| Capacity | 3700 mAh, Li-Polymer | |
| Other | Sigma Mobile X-treme PQ51 | other phones |
| Sensors | Proximity, Light, Accelerometer, Magnetometer, Fingerprint | |
