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| Network | Technology | GSM |
|---|---|---|
| 2G bands | GSM 900 / 1800 - SIM 1 & SIM 2 | |
| GPRS | Yes | |
| EDGE | Yes |
| Launch | Announced | 2014, October. Released 2014, October |
|---|---|---|
| Status | Discontinued |
| Body | Dimensions | 112.2 x 62 x 12 mm (4.42 x 2.44 x 0.47 in) |
|---|---|---|
| Weight | 93 g (3.28 oz) | |
| SIM | Dual SIM (dual stand-by) |
| Display | Type | TFT, 256K colors |
|---|---|---|
| Size | 3.5 inches, 36.5 cm2 (~52.4% screen-to-body ratio) | |
| Resolution | 320 x 480 pixels, 3:2 ratio (~165 ppi density) |
| Platform | OS | Firefox OS 1.3 |
|---|---|---|
| Chipset | Spreadtrum 6821 | |
| CPU | 1.0 GHz |
| Memory | Card slot | microSDHC (dedicated slot) |
|---|---|---|
| Internal | 256MB ROM, 128MB RAM |
| Main Camera | Single | 1.3 MP |
|---|---|---|
| Video | 320p |
| Selfie camera | Single | VGA, optional/operator dependent |
|---|---|---|
| Video |
| Sound | Loudspeaker | Yes |
|---|---|---|
| 3.5mm jack | Yes |
| Comms | WLAN | Wi-Fi 802.11 b/g/n |
|---|---|---|
| Bluetooth | 2.1, A2DP | |
| Positioning | No | |
| NFC | No | |
| Radio | FM radio | |
| USB | microUSB 2.0 |
| Features | Sensors | Accelerometer |
|---|---|---|
| MP3/AAC/WAV player MP4/H.263 player Photo viewer |
| Battery | Type | Li-Ion 1000 mAh, removable |
|---|---|---|
| Stand-by | Up to 160 h | |
| Talk time | Up to 7 h |
| Misc | Colors | Bluish Black, Dark Chocolate |
|---|---|---|
| Models | 4020D | |
| Price | About 30 EUR |
