Phone Comparison - Micromax A25 Smarty vs Micromax A27 Ninja vs Karbonn A25
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| Manufacturer | Micromax | Micromax | Karbonn |
| Announced | October 2012 | February 2013 | May 2013 |
| Status | Available - October 2012 | Available - February 2013 | Available - May 2013 |
| Colors | Black | Black | White, Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
104.5 x 56 x 13 mm (4.11 x 2.2 x 0.51 in) |
116.2 x 62 x 13.16 mm (4.57 x 2.44 x 0.52 in) |
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| Weight | 102 g (3.6 oz) | 95 g (3.35 oz) | - |
| 2G Network | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | N/A | N/A | No |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v2.3.6 (Gingerbread) | Android OS, v2.3.5 (Gingerbread) | Android OS, v4.0 (Ice Cream Sandwich) |
| Processor | 1 GHz | 1 GHz, Spreadtrum SC6820 | Dual-core 1 GHz |
| GPU | - | - | - |
| RAM | 256 MB | 256 MB | 512 MB |
| Internal Memory | 120 MB storage | 160 MB storage | 512 MB ROM |
| External Memory | microSD, up to 32 GB | microSD, up to 16 GB | microSD, up to 32 GB |
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| Type | TFT capacitive touchscreen | TFT capacitive touchscreen | TFT capacitive touchscreen |
| Colors | 256K colors | 65K colors | - |
| Size | 2.8 inches | 3.5 inches | 5.0 inches |
| Resolution | 240 x 320 pixels (143 ppi) | 320 x 480 pixels (165 ppi) | 480 x 800 pixels (187 ppi) |
| Screen-to-Body Ratio | 41.40% | 50.52% | - |
| 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 | 1.3 MP, 1280 x 1024 pixels | 0.3 MP, 640 x 480 pixels | 5 MP, 2592х1944 pixels |
| Flash | No | No | LED flash |
| Features | - | - | Auto focus, Geo-tagging |
| Video | Yes | Yes, 640 x 480, 10 fps | Yes |
| Front Camera | No [Similar] | No [Similar] | Yes, VGA [Similar] |
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| GPRS | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Yes |
| Edge | Class 12 | Class 12 | Yes, Class 12 |
| 3G | N/A | N/A | No |
| Bluetooth | Yes, v2.1 | Yes, v2.1 | Yes, v3.0 |
| Wi-Fi | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | No | No | Yes, with A-GPS support |
| Browser | HTML | HTML | HTML |
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| Internal | 120 MB storage, 256 MB RAM, 512 MB ROM | 160 MB storage, 256 MB RAM, 512 MB ROM | 512 MB ROM, 512 MB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 16 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 | 1280 mAh | 1400 mAh | 2000 mAh |
| Stand by | Up to 180 h | Up to 260 h | - |
| Talk Time | Up to 4 h | Up to 4 h 30 min | - |
