| Hardware and OS | Fly FS521 Power Plus 1 | |
| Operating system | Android 7.0 | |
| Processor | Spreadtrum SC9832, 1300 MHz | |
| Processor cores number | 4 | |
| RAM | 1 GB | |
| Internal Storage | 8 GB | |
| Memory Card Slot | yes, volume of up to 32 GB | |
| Display | Fly FS521 Power Plus 1 | other phones |
| Type | colored IPS, sensor | |
| Size | 5" | |
| Resolution | 1280x720 | |
| Pixel Density | 294 | |
| Touchscreen | multitouch, capacitive | |
| Aspect Ratio | 16:9 | |
| Automatic display rotation | yes | |
| Connectivity | Fly FS521 Power Plus 1 | other phones |
| Standard | GSM 900/1800/1900, 3G, 4G LTE | |
| Interfaces | Wi-Fi 802.11n, Bluetooth 4.1, USB | |
| LTE range support | 800, 1800, 2600 MHz | |
| Multi SIM mode | alternate | |
| SIM | micro SIM nano SIM | |
| Camera | Fly FS521 Power Plus 1 | other phones |
| Main camera | 8 MP | |
| Main camera functions | autofocus | |
| Front camera | 2 megapixels | |
| Flash | rear, LED | |
| Max. frame rate of video | 30 fps | |
| Video Recording | yes | |
| Video resolution max | 1280x720 | |
| Multimedia | Fly FS521 Power Plus 1 | other phones |
| Audio | MP3, AAC, WAV, WMA, FM-radio | |
| Headphone jack | 3.5 mm | |
| Design | Fly FS521 Power Plus 1 | other phones |
| Case material | plastic | |
| Case type | classic | |
| Height | 144.5 mm | |
| Width | 73 mm | |
| Thickness | 10.2 mm | |
| Weight | 170 grams | |
| Battery | Fly FS521 Power Plus 1 | other phones |
| Capacity | 3950 mA?h | |
| Battery | non-removable | |
| Battery type | Li-polymer | |
| Connector type for charging | micro-USB | |
| Standby time | 250 hours | |
| Talk time | 15 hours | |
| Other | Fly FS521 Power Plus 1 | other phones |
| Sensors | fingerprint scanner | |
| Flashlight | yes | |
