| Hardware and OS | iTel A51 | |
| Operating System | Android 6.0 (Marshmallow) | |
| Processor | Quad-core 1.3 GHz Cortex-A53 | |
| Chipset | Mediatek MT6580 (32nm) | |
| RAM | 1 GB | |
| Memory Card Slot | Yes, up to 32 GB via microSD card | |
| GPU | Mali-400MP2 | |
| Display | iTel A51 | other phones |
| Type | IPS LCD capacitive touchscreen, 16M colors | |
| Size | 5.5 inches, 68.9 cm2 (~73.2% screen-to-body ratio) | |
| Resolution | 480 x 854 pixels, 16:9 ratio | |
| Connectivity | iTel A51 | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 1900 | |
| Technology | GSM / HSPA | |
| Speed | HSPA 21.1/5.76 Mbps | |
| Bluetooth | Bluetooth 4.2 | |
| GPS | Yes | |
| NFC | No | |
| USB | Micro USB 2.0 | |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | |
| Camera | iTel A51 | other phones |
| Main camera | 5-megapixel main camera | |
| Camera Features | Geo-tagging, touch focus, PDAF, HDR | |
| Camera Type | Single Lens | |
| Video Recording | 720p@30fps | |
| Selfie camera | 5-megapixel | |
| Video Resolution | VGA | |
| Multimedia | iTel A51 | other phones |
| Headphone jack | Yes, 3.5mm audio jack | |
| FM Radio | Yes | |
| Loudspeaker | Yes | |
| Sound Enhancements | None | |
| Speaker Location | Back | |
| Design | iTel A51 | other phones |
| Body build | Plastic | |
| SIM | Dual SIM (Micro-SIM, dual stand-by) | |
| Dimensions | 146.7 x 74 x 8.3 mm (5.66 x 2.85 x 0.37 in) | |
| Weight | 143 g (4.02 oz) | |
| Battery | iTel A51 | other phones |
| Capacity | Non-removable Li-Ion 2700 mAh battery | |
| Fast Charging | No | |
| Wireless Charging | No | |
| Music Play time | Up to 25 hours | |
| Standby time | Up to 400 hours | |
| TalkTime | Up to 19 hours | |
| Other features | iTel A51 | other phones |
| Colors | Champagne Gold, Ice Blue, City Blue | |
| Sensors | Accelerometer, proximity | |
