| Hardware and OS | Celkon A66 | |
| Operating system | Android 4.1.2 (Jelly Bean) | |
| Processor | Dual-core 1.2 GHz | |
| Internal memory | 4 GB, 512 MB RAM | |
| External memory | microSD, up to 32 GB | |
| Display | Celkon A66 | other phones |
| Type | TFT | |
| Size | 4.5" inc | |
| Resolution | 480 x 854 px | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 61.1% | |
| Display area | 55.8 cm2 | |
| Display aspect ratio | 16:9 (height:width) | |
| Pixel Density | 218 PPI | |
| Connectivity | Celkon A66 | other phones |
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | |
| Network | GSM | |
| SIM card | Dual SIM | |
| Bluetooth | 2.0 | |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes | |
| USB | microUSB | |
| Camera | Celkon A66 | other phones |
| Main camera | 3.15 MP, Single | |
| Specs | 3.15 MP | |
| Features | LED flash | |
| Video | Yes | |
| Selfie camera | 0.3 MP, Single | |
| Multimedia | Celkon A66 | other phones |
| 3.5 mm Jack | Yes | |
| Radio | FM radio | |
| Design | Celkon A66 | other phones |
| Colors | White, Black | |
| Dimensions | 136 x 67.2 x 11 mm | |
| Weight | 98 g | |
| Battery | Celkon A66 | other phones |
| Battery capacity | 2000 mAh, Li-Ion | |
| Battery life | Stand by time- Up to 160 h
Talking time- Up to 5 h
| |
| Other | Celkon A66 | other phones |
| SAR | SAR EU - 0.38 W/kg (head), 0.47 W/kg (body) | |
| Release date | 2014 | |
| Sensors | Accelerometer, proximity | |
