Here is the comparison of features and specification of the mobile phones NIU Niutek 3.5D2 and Celkon A21.
NIU Niutek 3.5D2 is manufactured by NIU and this phone was announced in 2014, August. NIU Niutek 3.5D2 comes with with 3.5 inches and the resolution of the screen is 320 x 480 pixels.
This phone supports following network:
2G: GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G: HSDPA 850 / 1900 - SIM 1 & SIM 2 - TM35D2H043
Dipsplay Type: The dispaly type of the NIU Niutek 3.5D2 is TFT capacitive touchscreen with 256K colors.
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Celkon A21 is manufactured by Celkon and this phone was announced in 2014. Celkon A21 comes with with 4.0 inches and the resolution of the screen is 320 x 480 pixels.
This phone supports following network:
2G: GSM 900 / 1800 - SIM 1 & SIM 2
3G: HSDPA 2100
Dipsplay Type: The dispaly type of the Celkon A21 is Capacitive touchscreen.
| Specification Summary: NIU Niutek 3.5D2 vs Celkon A21 | ||
| Mobile Device | NIU Niutek 3.5D2 | Celkon A21 |
| Display | 3.5 inches | 4.0 inches |
| Resolution | 320 x 480 pixels | 320 x 480 pixels |
| Processor | Dual-core 1 GHz Cortex-A7 | Quad-core 1.3 GHz Cortex-A7 |
| Primary Camera | 2 MP | 3.15 MP |
| Front Camera | VGA | 1.3 MP |
| Storage | 2 GB ROM | 512 MB ROM |
| Battery | Li-Ion 1200 mAh | Li-Ion 1500 mAh |
| Full Specification comparison of NIU Niutek 3.5D2 vs Celkon A21 | ||
| Mobile Device | NIU Niutek 3.5D2 | Celkon A21 |
Display |
||
| Screen Size | 3.5 inches (~51.5% screen-to-body ratio) | 4.0 inches (~57.8% screen-to-body ratio) |
| Screen Resolution | 320 x 480 pixels | 320 x 480 pixels |
| Pixel Density | 320 x 480 pixels (~165 ppi pixel density) | 320 x 480 pixels (~144 ppi pixel density) |
| Display Type | TFT capacitive touchscreen with 256K colors | Capacitive touchscreen |
| Screen Protection | ||
Processor and RAM |
||
| Processor | Dual-core 1 GHz Cortex-A7 | Quad-core 1.3 GHz Cortex-A7 |
| Interal Storage | 2 GB ROM, 256 MB RAM | 512 MB ROM, 256 MB RAM |
| External Storage | microSD, up to 64 GB | microSD, up to 32 GB |
OS |
||
| OS Details | Android OS, v4.2 (Jelly Bean) | Android OS, v4.2.2 (Jelly Bean) |
Display |
||
| Display | 3.5 inches (~51.5% screen-to-body ratio) TFT capacitive touchscreen, 256K colors 320 x 480 pixels (~165 ppi pixel density) |
4.0 inches (~57.8% screen-to-body ratio) Capacitive touchscreen 320 x 480 pixels (~144 ppi pixel density) |
| Display Type | TFT capacitive touchscreen, 256K colors | Capacitive touchscreen |
Camera |
||
| Main Camera | 2 MP, 1600 x 1200 pixels, LED flash | 3.15 MP |
| Front Camera | VGA | 1.3 MP |
| Camera Features | Face detection, panorama | |
Connectivity |
||
| GPRS | Class 12 | Yes |
| EDGE | Class 12 | Yes |
| 2G | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM 1 & SIM 2 |
| 3G | HSDPA 850 / 1900 - SIM 1 & SIM 2 - TM35D2H043 | HSDPA 2100 |
| 4G | ||
| Wi-Fi/connectivity | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | Yes |
| Bluetooth | v3.0, A2DP | v4.0 |
| GPS | Yes, with A-GPS | No |
| USB | microUSB v2.0 | Yes |
Multimedia |
||
| FM Radio | Stereo FM radio | FM radio |
| Loudspeaker | ||
| Audio Jack | Yes | Yes |
Other Features |
||
| Compass | ||
| Proximity Sensors | ||
| Accelerometer | Yes | Yes |
| Ambient Sensor | ||
| Gyroscope Sensor | ||
| Barometer Sensor | ||
| Temperature Sensor | ||
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