| Hardware and OS | Celkon Campus A400 | |
| Operating System | Android v4.4.2 (KitKat) | |
| Processor | 1 GHz, Dual Core Processor | |
| RAM | 256 MB | |
| Internal Memory | 512 MB | |
| Memory Card Slot | Yes, upto 32 GB | |
| Graphics | Mali-400 | |
| Dual Sim | Yes | |
| Sim Type | Dual Sim, GSM GSM | |
| Display | Celkon Campus A400 | other phones |
| Screen Size | 4 inches, 480 x 800 pixels | |
| Display Type | Color LCD screen | |
| Pixel Density | ~233 PPI | |
| Touch Screen | Yes | |
| Display aspect ratio | 5:3 | |
| Connectivity | Celkon Campus A400 | other phones |
| 3G Network | Yes | |
| Bluetooth | Yes, v2.0 | |
| EDGE | Yes | |
| GPRS | Yes | |
| GPS | Yes | |
| USB | Yes, microUSB v2.0 | |
| Wifi | Yes, with wifi-hotspot | |
| Camera | Celkon Campus A400 | other phones |
| Main camera | 2 MP | |
| Flash | Yes, LED | |
| Selfie camera | 0.3 MP | |
| Multimedia | Celkon Campus A400 | other phones |
| Headphone jack | Yes | |
| FM Radio | Yes | |
| Java | Yes, via 3rd party | |
| Design | Celkon Campus A400 | other phones |
| Dimensions | 125.5 x 68 x 12.6 mm | |
| Weight | 95 g | |
| Battery | Celkon Campus A400 | other phones |
| Battery capacity | 1400 mAh, Li-ion Battery | |
| Type | Removable Battery | |
| StandBy Time | 10 days | |
| Talk Time | 9 hours | |
