| Price | 0 USD |
| Brand | karbonn |
| Model | Karbonn KT21 Express |
| Status | Discontinued |
| Release Date | 2012 |
| RAM | |
| STORAGE | |
| Memory Slot | microSD, up to 32 GB |
| Rear Camera | 3.15 MP |
| Feature | LED flash |
| Video Recording | Yes |
| Front Camera | MP |
| Front Video Recording |
| Network | nocellularconnectivity |
| USB | microUSB |
| GPS | No |
| Bluetooth | 2.0 |
| WLAN | No |
| SIM | Dual SIM (Mini-SIM) |
| EDGE | Yes |
| GPRS | Yes |
| Speed |
| Type | Removable Battery |
| Size | 1000 mAh, Li-Ion Battery |
| Charging |
| Sensors | Proximity |
| Type | TFT capacitive touchscreen |
| Size | 2.8 inches, 240 x 320 Pixel |
| Aspect Ratio | 4:3 |
| Protection | |
| Build |
| OS | |
| Chipsets | |
| GPU | |
| CPU |
| Colors | Black |
| Weight | - |
| Dimensions | - |
| NFC | |
| 3.5mm Jack | |
| Charging | |
| Water Proof |
| Radio | FM radio, recording |
| Loudspeaker |