Phone Comparison - Karbonn A1+ Duple vs Micromax Unite 2 A106 vs Micromax Bolt AD4500
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| Manufacturer | Karbonn | Micromax | Micromax |
| Announced | November 2013 | May 2014 | November 2014 |
| Status | Available - November 2013 | Available - May 2014 | Available - November 2014 |
| Price | - | - | Rs. 4,150 ($61.03) [Similarly Priced] |
| Colors | Black, White | Pristine White, Balmy Green, Mystic Grey, Raging Red | White, Red, Royal Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension | - |
138.9 x 71.9 x 9.4 mm (5.47 x 2.83 x 0.37 in) |
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| Weight | - | 158.5 g (5.57.0.18 oz) | - |
| 2G Network | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM1 & SIM 2 |
| 3G Network | No | HSDPA 2100 | No |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.2 (Jelly Bean) | Android OS, v4.4.2 (KitKat) | Android OS, v4.4.2 (KitKat) |
| Processor | Dual-core 1.3 GHz | Quad-core 1.3 GHz, Mediatek MT6582M | Dual-core 1.3 GHz, Mediatek MT6571 |
| GPU | - | Mali-400MP2 | Mali-400 |
| RAM | 256 MB | 1 GB | 512 MB |
| Internal Memory | 512 MB ROM | 4/8 GB (0.89 GB for apps, 1.67 GB for mass storage) | 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 | IPS LCD Capacitive Touchscreen | IPS LCD Capacitive Touchscreen | IPS LCD Capacitive Touchscreen |
| Colors | 16M colors | 16.7M colors | 262K colors |
| Size | 3.5 inches | 4.7 inches | 4.5 inches |
| Resolution | 320 x 480 pixels (165 ppi) | 480 x 800 pixels (199 ppi) | 480 x 854 pixels (218 ppi) |
| Screen-to-Body Ratio | - | 62.64% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio with Recording | FM Radio with Recording | Yes |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 3 MP, 2048x1536 pixels | 5 MP, 2592x1944 pixels | 5 MP, 2592 х 1944 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Fixed Focus, Face Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR | Fixed-focus, Geo-tagging |
| Video | Yes | Yes, 1080p | Yes, 720p |
| Front Camera | Yes, VGA [Similar] | Yes, 2 MP, 720p [Similar] | Yes, VGA [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | No | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | No |
| Bluetooth | Yes, with A2DP | Yes, v4.0 with A2DP | 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 | Yes, microUSB v2.0, USB On-the-go | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes, with A-GPS |
| Browser | HTML | HTML5 | HTML |
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| Internal | 512 MB ROM, 256 MB RAM | 4/8 GB (0.89 GB for apps, 1.67 GB for mass storage), 1 GB RAM | 4 GB ROM, 512 MB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
| USB OTG | - | Supported | - |
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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 | 1300 mAh | 2000 mAh | 2000 mAh |
| Stand by | - | Up to 190 h | - |
| Talk Time | - | Up to 8 h | - |
