| Hardware and OS | Karbonn A40 Indian | |
| Operating system | Android 7.0 Nougat | |
| Processor | Quad-Core 1.3GHz Cortex-A7 | |
| GPU | ARM Mali-400 MP2, 4-Cores | |
| RAM | 1GB | |
| Internal Storage | 8GB | |
| Memory Card Slot | microSD, microSDHC, microSDXC | |
| User Interface | Yes with Modified Android | |
| Display | Karbonn A40 Indian | other phones |
| Type | TFT capacitive touchscreen | |
| Size | 4.0 inches | |
| Resolution | 480 x 800 Pixels, 24 bit color depth | |
| Colors | 16M Colors | |
| Pixel Density | ~ 233 PPI | |
| Touchscreen | Yes Multi Touch Support | |
| Protection | None | |
| Features | WVGA display, ~ 233 PPI, Capacitive, Multi-touch, 2.5D curved glass screen, Corning Gorilla Glass, 400 nits Brightness, In-Cell Touch | |
| Connectivity | Karbonn A40 Indian | other phones |
| 4G Network | Yes | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, Wi-Fi Hotspot | |
| GPS | Yes, with GPS, A-GPS | |
| NFC | No | |
| USB | Micro USBv2.0, With Charging and Mass Storage Function | |
| Speed | LTE : 850 / 1800 MHz LTE-TDD : 2300 MHz (Band 40) | |
| SIM | Micro SIM | |
| Dual SIM | Dual SIM (Micro, Micro) | |
| Wireless Charging | No | |
| Camera | Karbonn A40 Indian | other phones |
| Main camera | 2 Megapixels | |
| Features | Yes with Single-LED Flash | |
| Image | 1600 x 1200 Pixels | |
| Selfie camera | VGA | |
| Multimedia | Karbonn A40 Indian | other phones |
| Loudspeaker | Yes | |
| Handsfree | Yes | |
| Radio | Yes | |
| Video Playback | Yes Support 3GP, MP4, xVID, AVI, H.264, H.263 | |
| Video Out | Not Support | |
| Ring Tones | Yes | |
| 3.5 mm Jack | yes | |
| Design | Karbonn A40 Indian | other phones |
| Dimensions | 122.95 mm x 64.3 mm x 10.5 mm | |
| Waterproof | No | |
| Weight | 118 Grams (Without Battery) | |
| Battery | Karbonn A40 Indian | other phones |
| Capacity | 1,400 mAh Lithium-Ion | |
| Placement | Removable | |
| Other | Karbonn A40 Indian | other phones |
| Sensors | Accelerometer | |
