Phone Comparison - Karbonn A12 vs Micromax Bolt A62 vs Nokia Lumia 625
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| Manufacturer | Karbonn | Micromax | Nokia |
| Announced | February 2013 | April 2013 | July 2013 |
| Status | Available - February 2013 | Available - April 2013 | Available - August 2013 |
| Colors | Black/White | Black/White | Orange, Bright green, Yellow, Black and white |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
135 x 66 x 11 mm (5.31 x 2.6 x 0.43 in) |
121.7 x 67.2 x 12.2 mm (4.79 x 2.65 x 0.48 in) |
133.2 x 72.2 x 9.2 mm (5.24 x 2.84 x 0.36 in) |
| Weight | 164 g (5.78 oz) | 85 g (3 oz) | 159 g (5.61 oz) |
| 2G Network | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 2100 - SIM 1 only | No | HSDPA 850 / 900 / 2100 HSDPA |
| 4G Network | - | - | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.0.4 (Ice Cream Sandwich) | Android OS, v2.3.5 (Gingerbread) | Microsoft Windows Phone 8 |
| Processor | 1 GHz | 1 GHz | Dual-core 1.2 GHz Krait, Qualcomm MSM8930 Snapdragon |
| GPU | - | - | Adreno 305 |
| RAM | 512 MB | 256 MB | 512 MB |
| Internal Memory | 4 GB | 202 MB | 8 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 16 GB | microSD, up to 64 GB |
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| Type | Capacitive Touchscreen | TFT touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 2 |
| Colors | 262K colors | 262K colors | 16M colors |
| Size | 4.5 inches | 3.95 inches | 4.7 inches |
| Resolution | 480 x 854 pixels (218 ppi) | 320 x 480 pixels (146 ppi) | 480 x 800 pixels (199 ppi) |
| Screen-to-Body Ratio | 62.46% | 56.85% | 65.05% |
| 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 | 2 MP, 1600x1200 pixels | 5 MP, 2592х1936 pixels |
| Flash | LED flash | No | LED flash |
| Features | Auto focus, Geo-tagging, Face Detection | - | Auto focus, Touch focus, Landscape orientation, Auto and manual exposure, Auto and manual white balance, Active toolbar, Full screen viewfinder, Geotagging |
| Video | Yes | Yes | Yes, 1080p@30fps |
| Front Camera | Yes, VGA [Similar] | Yes, VGA [Similar] | Yes, VGA [Similar] |
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| GPRS | Yes | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps | No | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL |
| Bluetooth | Yes | Yes, v2.0 A2DP | Yes, v4.0 with A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n | 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 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | No | Yes, with A-GPS support and GLONASS |
| Browser | HTML | HTML | HTML5 |
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| Internal | 4 GB, 512 MB RAM | 202 MB, 256 MB RAM, 512 MB ROM | 8 GB, 512 MB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 16 GB | microSD, up to 64 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 | Non-removable Li-Ion Battery |
| Capacity | 1800 mAh | 1350 mAh | 2000 mAh |
| Stand by | Up to 180 h | Up to 120 h | Up to 552 h |
| Talk Time | Up to 4 h | Up to 4 h | Up to 23 h 54 min (2G) Up to 15 h 12 min (3G) |
