| Hardware and OS | Fly FS551 Nimbus 4 | |
| Operating system | Android 4.4 | |
| Processor | Spreadtrum SC7731, 1200 MHz | |
| Processor cores number | 4 | |
| RAM | 512 Mb | |
| Internal Storage | 4 GB | |
| Memory Card Slot | yes, volume of up to 32 GB | |
| GPU | Mali-400 MP2 | |
| Display | Fly FS551 Nimbus 4 | other phones |
| Type | colored IPS, sensor | |
| Size | 5.5" | |
| Resolution | 960x540 | |
| Pixel Density | 200 | |
| Touchscreen | multitouch, capacitive | |
| Automatic display rotation | yes | |
| Connectivity | Fly FS551 Nimbus 4 | other phones |
| Standard | GSM 900/1800/1900, 3G | |
| Interfaces | Wi-Fi 802.11n, Bluetooth 2.1, USB | |
| Multi SIM mode | alternate | |
| SIM | regular | |
| Camera | Fly FS551 Nimbus 4 | other phones |
| Camera | 5.25921944 megapixels | |
| Front camera | 0.3 megapixels | |
| Video Recording | yes | |
| Video resolution max | 720x480 | |
| Multimedia | Fly FS551 Nimbus 4 | other phones |
| Audio | MP3, AAC, WAV, FM-radio | |
| Headphone jack | 3.5 mm | |
| Design | Fly FS551 Nimbus 4 | other phones |
| Case type | classic | |
| Height | 150.1 mm | |
| Width | 79 mm | |
| Thickness | 10.2 mm | |
| Weight | 194 grams | |
| Battery | Fly FS551 Nimbus 4 | other phones |
| Capacity | 2100 mA?h | |
| Battery type | Li-Ion | |
| Connector type for charging | micro-USB | |
| Standby time | 187 hours | |
| Talk time | 5 hours | |
| Other | Fly FS551 Nimbus 4 | other phones |
| Flashlight | yes | |
