| Hardware and OS | Micromax Bolt A66 | |
| Operating System | Android v4.1.2 (Jelly Bean) | |
| Processor | Single core, 1 GHz | |
| Chipset | Spreadtrum SC7710G | |
| RAM | 512 MB | |
| Internal Memory | 512 MB | |
| Expandable Memory | yes Up to 32 GB | |
| SIM Slot(s) | Dual SIM, GSM GSM | |
| Display | Micromax Bolt A66 | other phones |
| Screen Size | 4.5 inches (11.43 cm) | |
| Screen Resolution | 480 x 854 pixels | |
| Display Type | LCD | |
| Pixel Density | 218 ppi | |
| Touch Screen | yes Capacitive Touchscreen, Multi-touch | |
| Main Camera | Micromax Bolt A66 | other phones |
| Resolution | 2 MP Primary Camera
| |
| Image Resolution | 1600 x 1200 Pixels | |
| Flash | yes LED Flash | |
| Camera Features | Digital Zoom | |
| Front Camera | Micromax Bolt A66 | other phones |
| Resolution | 0.3 MP Primary Camera
| |
| Connectivity | Micromax Bolt A66 | other phones |
| Network | 4G: Not Available,
3G: Available, 2G: Available | |
| SIM 1 | 3G Bands: UMTS 2100 MHz 2G Bands: GSM 1800 / 900 MHz
3G Speed: HSDPA 7.2 Mbit/s ↓, HSUPA 5.76 Mbit/s ↑ GPRS: Available EDGE: Available | |
| SIM 2 | 2G Bands: GSM 1800 / 900 MHz
| |
| Bluetooth | yes v2.1 | |
| Wi-Fi | yes Wi-Fi 802.11 | |
| Wi-Fi Features | Mobile Hotspot | |
| USB Connectivity | microUSB | |
| Multimedia | Micromax Bolt A66 | other phones |
| Audio Jack | 3.5 mm | |
| FM Radio | yes | |
| Loudspeaker | yes | |
| Design | Micromax Bolt A66 | other phones |
| Height | 138 mm | |
| Width | 68 mm | |
| Thickness | 11 mm | |
| Weight | 93 grams | |
| Colours | White | |
| Battery | Micromax Bolt A66 | other phones |
| Type | Li-ion | |
| Capacity | 1500 mAh | |
| Standby time | Up to 116 Hours(2G) | |
| TalkTime | Up to 4.5 Hours(2G) | |
| Features | Micromax Bolt A66 | other phones |
| Applications | Spuul, Hike, Opera, Milive, Game hub, etc. | |
| Other Sensors | Accelerometer | |
