| Price | 0 USD |
| Brand | celkon |
| Model | Celkon A21 |
| Status | Available. Released 2014 |
| Release Date | 2014 |
| RAM | 256 MB RAM |
| STORAGE | 512 MB |
| Memory Slot | microSD, up to 32 GB |
| Rear Camera | 3.15 MP |
| Feature | |
| Video Recording | Yes |
| Front Camera | 1.3 MP |
| Front Video Recording |
| Network | 2G/3G |
| USB | microUSB |
| GPS | No |
| Bluetooth | 4.0, A2DP |
| WLAN | Wi-Fi 802.11 b/g/n |
| SIM | Dual SIM (Dual stand-by) |
| EDGE | Yes |
| GPRS | Yes |
| Speed | HSPA |
| Type | Removable Battery |
| Size | 1500 mAh, Li-Ion Battery |
| Charging |
| Sensors | Accelerometer |
| Type | Capacitive touchscreen |
| Size | 4.0 inches, 320 x 480 Pixel |
| Aspect Ratio | 3:2 |
| PPI | ~144 ppi density |
| Screen to Body Ratio | ~57.8% |
| Protection | |
| Build |
| OS | Android 4.2.2 Jelly Bean |
| Chipsets | Mediatek MT6582 (28 nm) |
| GPU | Mali-400MP2 |
| CPU | Quad-core 1.3 GHz Cortex-A7 |
| Colors | Black, Blue, Red |
| Weight | 115.3 g (4.06 oz) |
| Dimensions | 124.8 x 66.1 x 10.8 mm (4.91 x 2.60 x 0.43 in) |
| NFC | |
| 3.5mm Jack | |
| Charging | |
| Water Proof |
| Radio | FM radio |
| Loudspeaker |
