| Hardware and OS | Ergo Optima A503 Dual Sim | |
| Operating system | Android 6.0 | |
| Processor | MediaTek MT6580, 1300 MHz | |
| Processor cores number | 4 | |
| RAM | 1 GB | |
| Internal Storage | 8 GB | |
| Memory Card Slot | yes, volume of up to 64 GB, separate | |
| GPU | Mali-400 MP2 | |
| Display | Ergo Optima A503 Dual Sim | other phones |
| Type | colored IPS, sensor | |
| Size | 5" | |
| Resolution | 1280x720 | |
| Pixel Density | 294 | |
| Touchscreen | multitouch, capacitive | |
| Aspect Ratio | 16:9 | |
| Connectivity | Ergo Optima A503 Dual Sim | other phones |
| Standard | GSM 900/1800/1900, 3G | |
| Interfaces | Wi-Fi, Bluetooth 4.0, USB | |
| Multi SIM mode | alternate | |
| SIM | micro SIM | |
| Camera | Ergo Optima A503 Dual Sim | other phones |
| Main camera | 8 MP | |
| Front camera | 5 megapixels | |
| Flash | rear, LED | |
| Video Recording | yes | |
| Multimedia | Ergo Optima A503 Dual Sim | other phones |
| Audio | MP3, AAC, WAV, WMA, FM-radio | |
| Headphone jack | 3.5 mm | |
| Design | Ergo Optima A503 Dual Sim | other phones |
| Case material | plastic | |
| Case type | classic | |
| Height | 144 mm | |
| Width | 72.1 mm | |
| Thickness | 8.9 mm | |
| Weight | 172 grams | |
| Battery | Ergo Optima A503 Dual Sim | other phones |
| Capacity | 3000 mA?h | |
| Connector type for charging | micro-USB | |
| Other | Ergo Optima A503 Dual Sim | other phones |
| Flashlight | yes | |
