| Hardware and OS | Karbonn A81 | |
| Operating System | Android v4.4 (KitKat) | |
| Processor | 1 GHz, Single Core Processor | |
| RAM | 256 MB | |
| Internal Memory | 2 GB | |
| Memory Card Slot | Yes, upto 32 GB | |
| Dual Sim | Yes | |
| Sim Type | Dual Sim, GSM GSM | |
| Display | Karbonn A81 | other phones |
| Screen Size | 4 inches, 480 x 800 pixels | |
| Display Type | Color IPS screen | |
| Pixel Density | ~233 PPI | |
| Touch Screen | Yes, with Multitouch | |
| Display aspect ratio | 5:3 | |
| Connectivity | Karbonn A81 | other phones |
| 3G Network | Yes | |
| Bluetooth | Yes | |
| EDGE | Yes | |
| GPRS | Yes | |
| GPS | No | |
| USB | Yes, microUSB v2.0 | |
| Wifi | Yes, with wifi-hotspot | |
| Camera | Karbonn A81 | other phones |
| Main camera | 3 MP | |
| Flash | Yes, Dual LED | |
| Selfie camera | No | |
| Multimedia | Karbonn A81 | other phones |
| Headphone jack | Yes | |
| FM Radio | Yes | |
| Java | Yes, via 3rd party | |
| Design | Karbonn A81 | other phones |
| Dimensions | 123.4 x 66.3 x 9.5 mm | |
| Weight | 110 g | |
| Battery | Karbonn A81 | other phones |
| Battery capacity | 1400 mAh, Li-ion Battery | |
| Type | Removable Battery | |
| StandBy Time | 10 days | |
| Talk Time | 5 hours | |
