| Hardware and OS | Ergo A551 Sky | |
| Operating system | Android 6.0 | |
| Processor | MediaTek MT6737, 1300 MHz | |
| Processor cores number | 4 | |
| RAM | 1 GB | |
| Internal Storage | 8 GB | |
| Memory Card Slot | yes | |
| GPU | Mali-T720 MP2 | |
| Display | Ergo A551 Sky | other phones |
| Type | colored IPS, sensor | |
| Size | 5.5" | |
| Resolution | 1280x720 | |
| Pixel Density | 267 | |
| Touchscreen | multitouch, capacitive | |
| Aspect Ratio | 16:9 | |
| Connectivity | Ergo A551 Sky | other phones |
| Standard | GSM 900/1800/1900, 3G, 4G LTE, LTE-A Cat. 4 | |
| Interfaces | Wi-Fi 802.11n, Bluetooth 4.0, USB | |
| Multi SIM mode | alternate | |
| SIM-card amount | 2 | |
| Camera | Ergo A551 Sky | other phones |
| Main camera | 13 MP | |
| Front camera | 5 megapixels | |
| Flash | rear, LED | |
| Video Recording | yes | |
| Multimedia | Ergo A551 Sky | other phones |
| Audio | MP3 | |
| Headphone jack | 3.5 mm | |
| Design | Ergo A551 Sky | other phones |
| Case material | plastic | |
| Case type | classic | |
| Battery | Ergo A551 Sky | other phones |
| Capacity | 3000 mA?h | |
| Connector type for charging | micro-USB | |
| Other | Ergo A551 Sky | other phones |
| Flashlight | yes | |
