| Hardware and OS | Karbonn A18 | |
| Operating System | Android v4.0 (ICS) | |
| Processor | 1 GHz, Single Core Processor | |
| RAM | 512 MB | |
| Internal Memory | 4 GB | |
| Memory Card Slot | Yes, upto 32 GB | |
| Dual Sim | Yes | |
| Sim Type | Dual Sim, GSM GSM | |
| Display | Karbonn A18 | other phones |
| Screen Size | 4.3 inches, 480 x 800 pixels | |
| Display Type | Color LCD screen (16M colors) | |
| Pixel Density | ~217 PPI | |
| Touch Screen | Yes, with Multitouch | |
| Display aspect ratio | 5:3 | |
| Connectivity | Karbonn A18 | other phones |
| 3G Network | Yes 7.2 Mbps Download | |
| Bluetooth | Yes, v4.0 | |
| EDGE | Yes | |
| GPRS | Yes | |
| USB | Yes | |
| Wifi | Yes, with wifi-hotspot | |
| Multimedia | Karbonn A18 | other phones |
| Email | Yes | |
| FM Radio | Yes | |
| Music | Yes | |
| Video | Yes | |
| Browser | Yes | |
| Java | Yes | |
| Supports | MMS, Instant Messaging | |
| Design | Karbonn A18 | other phones |
| Case type | Classic (Candybar) | |
| Battery | Karbonn A18 | other phones |
| Battery capacity | 1500 mAh | |
| Type | Removable Battery | |
| StandBy Time | 200 hours | |
| Talk Time | 5 hours | |
