Phone Comparison - Karbonn A4 vs Micromax Unite 2 A106 vs Micromax Canvas Fire A093
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| Manufacturer | Karbonn | Micromax | Micromax |
| Announced | March 2013 | May 2014 | July 2014 |
| Status | Available - March 2013 | Available - May 2014 | Available - July 2014 |
| Colors | White/Black | Pristine White, Balmy Green, Mystic Grey, Raging Red | Black/Gold, White/Gold, Black/Silver, White/Silver |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
124.8 x 66 x 9.5 mm (4.91 x 2.6 x 0.37 in) |
138.9 x 71.9 x 9.4 mm (5.47 x 2.83 x 0.37 in) |
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| Weight | 75 g (2.65 oz) | 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 - SIM 1 & SIM 2 |
| 3G Network | N/A | HSDPA 2100 | HSDPA 2100 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v2.3.6 (Gingerbread) | Android OS, v4.4.2 (KitKat) | Android OS, v4.4.2 (KitKat) |
| Processor | 1 GHz | Quad-core 1.3 GHz, Mediatek MT6582M | Quad-core 1.3 GHz |
| GPU | - | Mali-400MP2 | - |
| RAM | 256 MB | 1 GB | 512 MB |
| Internal Memory | 104 MB | 4/8 GB (0.89 GB for apps, 1.67 GB for mass storage) | 4 GB |
| 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 | Capacitive touchscreen |
| Colors | 256K colors | 16.7M colors | 16M colors |
| Size | 4.0 inches | 4.7 inches | 4.0 inches |
| Resolution | 320 x 480 pixels (144 ppi) | 480 x 800 pixels (199 ppi) | 480 x 800 pixels (233 ppi) |
| Screen-to-Body Ratio | 58.02% | 62.64% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM Radio with Recording | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 3.2 MP, 2048x1536 pixels | 5 MP, 2592x1944 pixels | 5 MP, 2592 х 1944 pixels |
| Flash | No | LED flash | LED flash |
| Features | Face Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR | Geo-tagging, Panorama, HDR |
| Video | Yes | Yes, 1080p | |
| Front Camera | Yes, VGA [Similar] | Yes, 2 MP, 720p [Similar] | VGA [Similar] |
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| GPRS | Yes | Yes | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps |
| Edge | Yes | Yes | Class 12 |
| 3G | No | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, HSUPA |
| Bluetooth | Yes | Yes, v4.0 with A2DP | v4.0 |
| 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 | microUSB v2.0 |
| GPS | No | Yes, with A-GPS support | Yes, with A-GPS |
| Browser | HTML | HTML5 | HTML |
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| Internal | 104 MB, 256 MB RAM, 512 MB ROM | 4/8 GB (0.89 GB for apps, 1.67 GB for mass storage), 1 GB RAM | 4 GB, 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 | 1400 mAh | 2000 mAh | 1750 mAh |
| Stand by | Up to 250 h | Up to 190 h | Up to 210 h |
| Talk Time | Up to 4 h 10 min | Up to 8 h | Up to 7 h |
