Phone Comparison - Xolo A500S vs Karbonn A12+ vs Celkon A66
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| Manufacturer | Xolo | Karbonn | Celkon |
| Announced | August 2013 | October 2013 | October 2013 |
| Status | Available - August 2013 | Available - October 2013 | Available - October 2013 |
| Colors | Black | White, Black | Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
125 x 63.2 x 8.98 mm (4.92 x 2.49 x 0.35 in) |
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136 x 67.2 x 11 mm (5.35 x 2.65 x 0.43 in) |
| Weight | - | - | 98 g (3.46 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 | HSDPA 2100 | No |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.2 (Jelly Bean) | Android OS, v4.2.2 (Jelly Bean) | Android OS, v4.1.2 (Jelly Bean) |
| Processor | Dual-core 1.2 GHz, MediaTek MT6572W | Dual-core 1.3 GHz, MTK 6572 | Dual-core 1.2 GHz, MTK 6572 |
| GPU | Mali-400MP | Mali-400MP | Mali-400 |
| RAM | 512 MB | 512 MB | 512 MB |
| Internal Memory | 4 GB | 4 GB (1.27 GB for apps, 1.24 GB user available) | 4 GB ROM |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | TFT capacitive touchscreen | IPS LCD Capacitive Touchscreen, Wide Viewing Angle | TFT capacitive touchscreen |
| Colors | 16M colors | 16M colors | - |
| Size | 4.0 inches | 4.0 inches | 4.5 inches |
| Resolution | 480 x 800 pixels (233 ppi) | 480 x 800 pixels (233 ppi) | 480 x 854 pixels (218 ppi) |
| Screen-to-Body Ratio | 57.76% | - | 60.89% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | 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, 2592х1944 pixels | 3.2 MP, 2048x1536 pixels |
| Flash | LED flash | LED flash | No |
| Features | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection | Auto-focus, Geo-tagging, Face Detection, Panorama | Fixed Focus, Geo-tagging |
| Video | Yes, 720p | Yes, 720p | Yes, 720p |
| Front Camera | Yes, VGA [Similar] | Yes, 2 MP [Similar] | Yes, VGA [Similar] |
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| GPRS | Yes | Yes | Class 10 (4+1/3+2 slots), 32 - 48 kbps |
| Edge | Yes | Yes | Class 10, 236.8 kbps |
| 3G | HSDPA, 21.1 Mbps; HSUPA, 5.76 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | No |
| Bluetooth | Yes, v3.0 | Yes, v2.0 A2DP, 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 hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot |
| USB | Yes | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes, with A-GPS support |
| Browser | HTML5 | HTML | HTML |
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| Internal | 4 GB, 512 MB RAM | 4 GB (1.27 GB for apps, 1.24 GB user available), 512 MB RAM | 4 GB ROM, 512 MB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB | 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 | Li-Po Battery |
| Capacity | 1400 mAh | 1400 mAh | 2000 mAh |
| Stand by | Up to 492 h (2G) Up to 470 h (3G) |
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| Talk Time | Up to 10 h (2G) Up to 8 h (3G) |
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