| Hardware and OS | ZTE Blade A521 | |
| Operating system | Android 7.0 Nougat | |
| Processor | Quad-Core 1.1GHz ARM Cortex A7 | |
| GPU | Qualcomm Adreno 304 | |
| RAM | 2GB | |
| Internal Storage | 16GB | |
| Memory Card Slot | microSD, microSDHC, microSDXC | |
| User Interface | Yes with MiFavor UI | |
| Display | ZTE Blade A521 | other phones |
| Type | IPS, LCD capacitive touchscreen | |
| Size | 5.0 inches HD | |
| Resolution | 1280 x 720 Pixels, 24 bit color depth | |
| Colors | 16M Colors | |
| Pixel Density | ~ 294 ppi | |
| Touchscreen | Yes Multi Touch Support | |
| Protection | Yes Support | |
| Features | HD Display, ~ 294 PPI , Capacitive , Multi-touch, Scratch Resistant | |
| Connectivity | ZTE Blade A521 | other phones |
| 4G Network | LTE : 800 / 900 / 1800 / 2100 / 2600 MHz | |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi HotSpot | |
| GPS | Yes, with GPS, A-GPS | |
| NFC | No | |
| USB | Micro USBv2.0 With Charging and Mass Storage Function | |
| Speed | LTE Cat 4 150 Mbps Download, 50 Mbps Upload, HSUPA 5.76 Mbps Upload, HSDPA 21 Mbps Download, EV-DO Rev.A 1.8 Mbps Upload, 3.1 Mbps Download | |
| SIM | Nano SIM | |
| Dual SIM | (Nano, Nano) | |
| Camera | ZTE Blade A521 | other phones |
| Main camera | 8 Megapixels with Single-LED and AF Rear Camera | |
| Features | Yes with Single-LED Flash | |
| Image | 3264 x 2448 Pixels | |
| Selfie camera | 8 Megapixels | |
| Multimedia | ZTE Blade A521 | other phones |
| Loudspeaker | Yes | |
| Radio | Yes | |
| Video Playback | Up to 5 Hours | |
| Video Out | Yes With Wireless Media Link | |
| Ring Tones | MP3 ringtones | |
| 3.5 mm Jack | yes | |
| Design | ZTE Blade A521 | other phones |
| Dimensions | 144X71X8.4mm | |
| Weight | 137 grams | |
| Battery | ZTE Blade A521 | other phones |
| Capacity | 2,400 mAh | |
| Placement | Non-Removable | |
| Other | ZTE Blade A521 | other phones |
| Sensors | Accelerometer, Proximity, Light | |
