Phone Comparison - Karbonn A12+ vs Karbonn Smart A12 Star vs Micromax Bolt A082
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| Manufacturer | Karbonn | Karbonn | Micromax |
| Announced | October 2013 | June 2014 | August 2014 |
| Status | Available - October 2013 | Available - June 2014 | Available - August 2014 |
| Colors | White, Black | White, Black | Blue, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension | - |
124.2 x 64.2 x 10.1 mm (4.89 x 2.53 x 0.4 in) |
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| Weight | - | 130 g (4.59 oz) | - |
| 2G Network | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM1 & SIM 2 |
| 3G Network | HSDPA 2100 | HSDPA 2100 | No |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - | - | Dual Front Speakers |
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| OS | Android OS, v4.2.2 (Jelly Bean) | Android OS, v4.4.2 (KitKat) | Android OS, v4.4.2 (KitKat) |
| Processor | Dual-core 1.3 GHz, MTK 6572 | Dual-core 1.2 GHz, MTK 6572 | Dual-core 1.3 GHz, Mediatek MT6571 |
| GPU | Mali-400MP | Mali-400MP | Mali-400 |
| RAM | 512 MB | 512 MB | 512 MB |
| Internal Memory | 4 GB (1.27 GB for apps, 1.24 GB user available) | 4 GB (2.4 GB internal storage) | 4 GB (1.0 GB for apps, 1.30 GB for mass storage) |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | IPS LCD Capacitive Touchscreen, Wide Viewing Angle | IPS LCD Capacitive Touchscreen, Wide Viewing Angle | TFT Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 262K colors |
| Size | 4.0 inches | 4.0 inches | 4.0 inches |
| Resolution | 480 x 800 pixels (233 ppi) | 480 x 800 pixels (233 ppi) | 480 x 800 pixels (233 ppi) |
| Screen-to-Body Ratio | - | 57.23% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio | Yes |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592х1944 pixels | 5 MP, 2592х1944 pixels | 2 MP, 1600 x 1200 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto-focus, Geo-tagging, Face Detection, Panorama | Geo-tagging, Face Detection, Panorama | Fixed-focus, Geo-tagging |
| Video | Yes, 720p | Yes, 720p | Yes, 720p |
| Front Camera | Yes, 2 MP [Similar] | Yes, VGA [Similar] | Yes, VGA [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | No |
| Bluetooth | Yes, v2.0 A2DP, EDR | Yes, v2.0 A2DP, EDR | Yes, v3.0 |
| 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, microUSB v2.0 | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes, with A-GPS |
| Browser | HTML | HTML | HTML |
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| Internal | 4 GB (1.27 GB for apps, 1.24 GB user available), 512 MB RAM | 4 GB (2.4 GB internal storage), 512 MB RAM | 4 GB (1.0 GB for apps, 1.30 GB for mass storage), 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-Ion Battery |
| Capacity | 1400 mAh | 1400 mAh | 1700 mAh |
| Stand by | - | Up to 300 h (2G) | Up to 160 h |
| Talk Time | - | - | Up to 7 h |
