| Hardware and OS | KREZ SM503B8 DUO LTE | |
| Operating system | Android 5.1 | |
| Processor | MediaTek MT6735, 1500 MHz | |
| Processor cores number | 4 | |
| RAM | 1 GB | |
| Internal Storage | 8 GB | |
| Memory Card Slot | yes, volume of up to 32 GB, separate | |
| GPU | Mali-T720 | |
| Display | KREZ SM503B8 DUO LTE | other phones |
| Type | colored IPS, sensor | |
| Size | 5" | |
| Resolution | 1280x720 | |
| Touchscreen | multitouch, capacitive | |
| Aspect Ratio | 16:9 | |
| Connectivity | KREZ SM503B8 DUO LTE | other phones |
| Standard | GSM 900/1800/1900, 3G, 4G LTE | |
| Interfaces | Wi-Fi, Bluetooth 4.0, IRDA, USB | |
| LTE range support | Bands B3, B7, B20 | |
| Multi SIM mode | alternate | |
| SIM-card amount | 2 | |
| Camera | KREZ SM503B8 DUO LTE | other phones |
| Main camera | 8 MP | |
| Front camera | 5 megapixels | |
| Flash | front and rear, LED | |
| Video Recording | yes | |
| Multimedia | KREZ SM503B8 DUO LTE | other phones |
| Audio | MP3, FM-radio | |
| Headphone jack | 3.5 mm | |
| Design | KREZ SM503B8 DUO LTE | other phones |
| Case type | classic | |
| Battery | KREZ SM503B8 DUO LTE | other phones |
| Capacity | 3000 mA?h | |
| Connector type for charging | micro-USB | |
| Other | KREZ SM503B8 DUO LTE | other phones |
| Flashlight | yes | |
