Phone Comparison - Karbonn Smart A51 vs Micromax Bolt A24 vs Samsung Galaxy Core Prime
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| Manufacturer | Karbonn | Micromax | Samsung |
| Announced | September 2013 | January 2014 | October 2014 |
| Status | Available - September 2013 | Available - January 2014 | Available - October 2014 |
| Price | - | - | Rs. 7,799 ($114.69) [Similarly Priced] |
| Colors | White Silver | Black | White, Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension | - | - |
130.8 x 67.9 x 8.8 mm (5.15 x 2.67 x 0.35 in) |
| Weight | - | - | 130 g (4.59 oz) |
| 2G Network | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (SM-G3606, SM-G3608, SM-G3609) |
| 3G Network | No | No | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | - | - | LTE - SM-G3606, SM-G3608, SM-G3609 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.0 (Ice Cream Sandwich) | Android OS, v2.3.5 (Gingerbread) | Android OS, v4.4.2 (KitKat) |
| Processor | 1 GHz | 1 GHz, Spreadtrum SC6820 | Quad-core 1.3 GHz |
| GPU | - | - | - |
| RAM | 256 MB | 256 MB | 1 GB |
| Internal Memory | 512 MB (100 MB user available) | 100 MB storage | 8 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 16 GB | microSD, up to 64 GB |
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| Type | TFT capacitive touchscreen | TFT capacitive touchscreen | PLS capacitive touchscreen |
| Colors | 16M colors | 65K colors | 16M colors |
| Size | 3.5 inches | 2.8 inches | 4.5 inches |
| Resolution | 320 x 480 pixels (165 ppi) | 240 x 320 pixels (143 ppi) | 480 x 800 pixels (207 ppi) |
| Screen-to-Body Ratio | - | - | 65.10% |
| 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 | 3.15 MP, 2048x1536 pixels | 0.3 MP, 640 x 480 pixels | 5 MP, 2592 х 1944 pixels |
| Flash | LED flash | No | LED flash |
| Features | - | - | Auto focus, Geo-tagging, Touch Focus, Face Detection |
| Video | Yes | Yes, 640 x 480, 10 fps | 1080p |
| Front Camera | Yes, VGA [Similar] | No [Similar] | 2 MP [Similar] |
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| GPRS | Yes | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Yes |
| Edge | Yes | Class 12 | Yes |
| 3G | No | No | HSPA; LTE |
| Bluetooth | Yes | Yes, v2.1 | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA, Wi-Fi hotspot |
| USB | Yes | Yes, microUSB v2.0 | microUSB v2.0 |
| GPS | No | No | Yes, with A-GPS |
| Browser | HTML | HTML | HTML |
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| Internal | 512 MB (100 MB user available), 256 MB RAM | 100 MB storage, 256 MB RAM, 512 MB ROM | 8 GB, 1 GB 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 | Li-Ion Battery |
| Capacity | 1100 mAh | - | 2000 mAh |
| Stand by | - | Up to 150 h | - |
| Talk Time | - | Up to 4 h | - |
