| Hardware and OS | Micromax Bolt D321 | |
| Operating system | Android 4.4.2 (KitKat) | |
| Processor | Dual-core 1.3 GHz Cortex-A7 | |
| Chipset | Mediatek MT6572 (28 nm) | |
| GPU | Mali-400 | |
| Internal memory | 4 GB, 512 MB RAM | |
| External memory | microSD, up to 32 GB | |
| Display | Micromax Bolt D321 | other phones |
| Size | 5" inc | |
| Resolution | 480 x 854 px | |
| Touchscreen | capacitive touchscreen | |
| Display area | 68.9 cm2 | |
| Display aspect ratio | 16:9 (height:width) | |
| Pixel Density | 196 PPI | |
| Colors | 16M | |
| Connectivity | Micromax Bolt D321 | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | |
| Network | GSM / HSPA | |
| SIM card | Dual SIM | |
| Bluetooth | 4.0, A2DP | |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS | |
| Speed | HSPA 21.1/5.76 Mbps | |
| USB | microUSB 2.0 | |
| Camera | Micromax Bolt D321 | other phones |
| Main camera | 5 MP, Single | |
| Specs | 5 MP | |
| Features | LED flash | |
| Video | Yes | |
| Selfie camera | 2 MP, Single | |
| Multimedia | Micromax Bolt D321 | other phones |
| 3.5 mm Jack | Yes | |
| Radio | FM radio | |
| Design | Micromax Bolt D321 | other phones |
| Colors | Black, White | |
| Battery | Micromax Bolt D321 | other phones |
| Battery capacity | 1800 mAh, Removable Li-Ion | |
| Battery life | Stand by time- Up to 300 h (3G)
Talking time- Up to 7 h (3G)
| |
| Other | Micromax Bolt D321 | other phones |
| SAR | SAR - 0.51 W/kg (head), 0.84 W/kg (body) | |
| Release date | 2015, February | |
| Sensors | Accelerometer, proximity | |
