Phone Comparison - Karbonn A12+ vs Nokia Asha 502 Dual SIM vs Celkon AR40
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| Manufacturer | Karbonn | Nokia | Celkon |
| Announced | October 2013 | October 2013 | October 2013 |
| Status | Available - October 2013 | Available - December 2013 | Available - October 2013 |
| Colors | White, Black | Bright Red, Bright Green, Cyan, Yellow, White and Black | Yellow |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension | - |
99.6 x 59.5 x 11.1 mm (3.92 x 2.34 x 0.44 in) |
126.2 x 64 x 10.8 mm (4.97 x 2.52 x 0.43 in) |
| Weight | - | 100 g (3.53 oz) | 126.5 g (4.44.0.18 oz) |
| 2G Network | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 2100 | No | HSDPA 2100 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.2.2 (Jelly Bean) | Nokia Asha software platform 1.1 | Android OS, v4.2.2 (Jelly Bean) |
| Processor | Dual-core 1.3 GHz, MTK 6572 | - | Dual-core 1.2 GHz, MTK 6572 |
| GPU | Mali-400MP | - | Mali-400 |
| RAM | 512 MB | 64 MB | 512 MB |
| Internal Memory | 4 GB (1.27 GB for apps, 1.24 GB user available) | N/A | 4 GB ROM |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB, 4 GB card included | microSD, up to 32 GB |
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| Type | IPS LCD Capacitive Touchscreen, Wide Viewing Angle | TFT capacitive touchscreen | TFT capacitive touchscreen |
| Colors | 16M colors | 256K colors | 16M colors |
| Size | 4.0 inches | 3.0 inches | 4.0 inches |
| Resolution | 480 x 800 pixels (233 ppi) | 240 x 320 pixels (133 ppi) | 480 x 800 pixels (233 ppi) |
| Screen-to-Body Ratio | - | 47.27% | 56.50% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | Stereo FM radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592х1944 pixels | 5 MP, 2592x1944 pixels | 3.2 MP, 2048x1536 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto-focus, Geo-tagging, Face Detection, Panorama | Fixed Focus, Auto and Manual White Balance, Full Screen Viewfinder, Capture Modes, Scene Modes, Color Tone Modes, Image Editor | Fixed Focus, Geo-tagging |
| Video | Yes, 720p | Yes, QVGA@15fps | Yes, 720p |
| Front Camera | Yes, 2 MP [Similar] | No [Similar] | Yes, VGA [Similar] |
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| GPRS | Yes | Up to 85.6 kbps | Class 10 (4+1/3+2 slots), 32 - 48 kbps |
| Edge | Yes | Up to 236.8 kbps | Class 10, 236.8 kbps |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | N/A | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes, v2.0 A2DP, EDR | Yes, v3.0 with EDR | Yes, v2.0 A2DP, EDR |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | No | Yes |
| Browser | HTML | WAP 2.0/xHTML, HTML | HTML |
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| Internal | 4 GB (1.27 GB for apps, 1.24 GB user available), 512 MB RAM | 64 MB RAM | 4 GB ROM, 512 MB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB, 4 GB card included | microSD, up to 32 GB |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| NFC | |
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| Type | Li-Ion Battery | Li-Ion Battery (BL-5A) | Li-Po Battery |
| Capacity | 1400 mAh | 1010 mAh | 1500 mAh |
| Stand by | - | Up to 576 h | - |
| Talk Time | - | Up to 13 h 42 min | - |
