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                                                                        Jan 16, 2020 /
 
                                                                        Jan 16, 2020 /
 
                                                                        Jan 16, 2020 /
 
                                                                        Jan 16, 2020 /
 
                                                                        Jan 16, 2020 /
 
                                                                        Jan 16, 2020 /
 
                                                                        Jan 16, 2020 /
 
                                                                        Jan 16, 2020 /
 
                                                                        Jan 16, 2020 /
| Celkon A21 |  | |
|   | ||
| Launch | ||
| Announced | 2014 | |
| Status | Available. Released 2014 | |
| Network | ||
| Technology | GSM / HSPA | |
| 2G | GSM 900 / 1800 - SIM 1 & SIM 2 | |
| 3G | HSDPA 2100 | |
| Speed | HSPA | |
| GPRS | Yes | |
| Edge | Yes | |
| Body | ||
| Dimensions | 124.8 x 66.1 x 10.8 mm (4.91 x 2.60 x 0.43 in) | |
| Weight | 115.3 g (4.06 oz) | |
| SIM | Dual SIM (Dual stand-by) | |
| Display | ||
| Type | Capacitive touchscreen | |
| Size | 4.0 inches (~57.8% screen-to-body ratio) | |
| Resolution | 320 x 480 pixels (~144 ppi pixel density) | |
| Platform | ||
| OS | Android OS, v4.2.2 (Jelly Bean) | |
| Chipset | Mediatek MT6582 | |
| CPU | Quad-core 1.3 GHz Cortex-A7 | |
| GPU | Mali-400MP2 | |
| Memory | ||
| Card Slot | microSD, up to 32 GB | |
| Internal | 512 MB, 256 MB RAM | |
| Camera | ||
| Primary | 3.15 MP | |
| Video | Yes | |
| Secondary | 1.3 MP | |
| Sound | ||
| Alert types | Vibration; MP3, WAV ringtones | |
| Loudspeaker | Yes | |
| 3.5mm Jack | Yes | |
| Comms | ||
| WLAN | Yes | |
| Bluetooth | v4.0 | |
| GPS | No | |
| Radio | FM radio | |
| USB | Yes | |
| Features | ||
| Sensors | Accelerometer | |
| Messaging | SMS (threaded view), MMS, Email | |
| Browser | HTML | |
| Java | No | |
| Battery | ||
| Battery | Li-Ion 1500 mAh battery | |
| Stand-by | Up to 120 h (3G) | |
| Talk time | Up to 8 h (3G) | |
| Misc | ||
| Colors | Black, Blue, Red | |
| SAR EU | 0.99 W/kg (head)     1.39 W/kg (body)     | |
| Price group | 2/10 (About 60 EUR) | |