| Hardware and OS | ZTE N721 | |
| Operating system | Android OS | |
| Internal memory | 150 MB | |
| External memory | microSD, up to 32 GB (dedicated slot) | |
| Display | ZTE N721 | other phones |
| Type | TFT | |
| Size | 2.8" inc | |
| Resolution | 240 x 320 px | |
| Touchscreen | touchscreen | |
| Screen-to-Body Ratio | 40.8% | |
| Display area | 24.3 cm2 | |
| Display aspect ratio | 4:3 (height:width) | |
| Pixel Density | 143 PPI | |
| Colors | 256K | |
| Connectivity | ZTE N721 | other phones |
| 2G Network | GSM 900 / 1800 | |
| Wi-Fi | Wi-Fi 802.11 b/g | |
| Network | GSM / HSPA | |
| SIM card | Mini-SIM | |
| Bluetooth | 2.1 | |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS | |
| Speed | HSPA 7.2/0.384 Mbps | |
| USB | microUSB 2.0 | |
| Camera | ZTE N721 | other phones |
| Main camera | 2 MP, Single | |
| Specs | 2 MP | |
| Video | Yes | |
| Multimedia | ZTE N721 | other phones |
| 3.5 mm Jack | Yes | |
| Design | ZTE N721 | other phones |
| Colors | Black | |
| Dimensions | 106 x 56.2 x 14.2 mm | |
| Weight | 105 g | |
| Battery | ZTE N721 | other phones |
| Battery capacity | 1100 mAh, Removable Li-Ion | |
| Battery life | Stand by time- Up to 250 h
Talking time- Up to 4 h 10 min
| |
| Other | ZTE N721 | other phones |
| SAR | SAR EU - 0.73 W/kg (head) | |
| Release date | 2011 | |
| Sensors | Accelerometer | |
