Here is the comparison of features and specification of the mobile phones Celkon A21 and Oppo A31.
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.
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Oppo A31 is manufactured by Oppo and this phone was announced in 2015, April. Oppo A31 comes with with 4.5 inches and the resolution of the screen is 480 x 854 pixels.
This phone supports following network:
2G: GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G: TD-SCDMA 1880 / 2010
4G: LTE band 38(2600), 39(1900), 40(2300), 41(2500)
Dipsplay Type: The dispaly type of the Oppo A31 is IPS LCD capacitive touchscreen with 16M colors.
| Specification Summary: Celkon A21 vs Oppo A31 | ||
| Mobile Device | Celkon A21 | Oppo A31 |
| Display | 4.0 inches | 4.5 inches |
| Resolution | 320 x 480 pixels | 480 x 854 pixels |
| Processor | Quad-core 1.3 GHz Cortex-A7 | Quad-core Cortex-A53 |
| Primary Camera | 3.15 MP | 8 MP |
| Front Camera | 1.3 MP | 5 MP |
| Storage | 512 MB ROM | 8 GB |
| Battery | Li-Ion 1500 mAh | Li-Ion 2000 mAh |
| Full Specification comparison of Celkon A21 vs Oppo A31 | ||
| Mobile Device | Celkon A21 | Oppo A31 |
Display |
||
| Screen Size | 4.0 inches (~57.8% screen-to-body ratio) | 4.5 inches (~64.6% screen-to-body ratio) |
| Screen Resolution | 320 x 480 pixels | 480 x 854 pixels |
| Pixel Density | 320 x 480 pixels (~144 ppi pixel density) | 480 x 854 pixels (~218 ppi pixel density) |
| Display Type | Capacitive touchscreen | IPS LCD capacitive touchscreen with 16M colors |
| Screen Protection | ||
Processor and RAM |
||
| Processor | Quad-core 1.3 GHz Cortex-A7 | Quad-core Cortex-A53 |
| Interal Storage | 512 MB ROM, 256 MB RAM | 8 GB, 1 GB RAM |
| External Storage | microSD, up to 32 GB | microSD, up to 128 GB |
OS |
||
| OS Details | Android OS, v4.2.2 (Jelly Bean) | Android OS, v4.4 (KitKat) |
Display |
||
| Display | 4.0 inches (~57.8% screen-to-body ratio) Capacitive touchscreen 320 x 480 pixels (~144 ppi pixel density) |
4.5 inches (~64.6% screen-to-body ratio) IPS LCD capacitive touchscreen, 16M colors 480 x 854 pixels (~218 ppi pixel density) |
| Display Type | Capacitive touchscreen | IPS LCD capacitive touchscreen, 16M colors |
Camera |
||
| Main Camera | 3.15 MP | 8 MP, 3264 x 2448 pixels, autofocus, LED flash |
| Front Camera | 1.3 MP | 5 MP |
| Camera Features | Geo-tagging | |
Connectivity |
||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 2G | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G | HSDPA 2100 | TD-SCDMA 1880 / 2010 |
| 4G | LTE band 38(2600), 39(1900), 40(2300), 41(2500) | |
| Wi-Fi/connectivity | Yes | Yes |
| Bluetooth | v4.0 | v4.0 |
| GPS | No | Yes, with A-GPS |
| USB | Yes | microUSB v2.0 |
Multimedia |
||
| FM Radio | FM radio | TBC |
| Loudspeaker | ||
| Audio Jack | Yes | Yes |
Other Features |
||
| Compass | ||
| Proximity Sensors | Yes | |
| Accelerometer | Yes | Yes |
| Ambient Sensor | ||
| Gyroscope Sensor | ||
| Barometer Sensor | ||
| Temperature Sensor | ||
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