Phone Comparison - Karbonn A2 vs Karbonn A7 Star vs Samsung Galaxy Trend Duos S7392
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| Manufacturer | Karbonn | Karbonn | Samsung |
| Announced | March 2013 | May 2013 | April 2013 |
| Status | Available - March 2013 | Available - May 2013 | Available - May 2013 |
| Colors | White/Black | Black, White | White, Gray |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
124 x 63.6 x 12.4 mm (4.88 x 2.5 x 0.49 in) |
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121.5 x 63.1 x 11.1 mm (4.78 x 2.48 x 0.44 in) |
| Weight | 110 g (3.88 oz) | - | 128.5 g (4.52.0.18 oz) |
| 2G Network | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - GT-S7570 GSM 850 / 900 / 1800 / 1900 - GT-S7572 (SIM 1 & SIM 2) |
| 3G Network | N/A | No | HSDPA 900 / 2100 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v2.3.6 (Gingerbread) | Android OS, v4.0.4 (Ice Cream Sandwich) | Android OS, v4.1 (Jelly Bean) |
| Processor | 1 GHz | Dual-core 1 GHz | Dual-core 1.2 GHz |
| GPU | - | - | - |
| RAM | N/A | 512 MB | N/A |
| Internal Memory | 202 MB | 164 MB | - |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | Capacitive touchscreen | TFT Capacitive Touchscreen | TFT capacitive touchscreen |
| Colors | - | 16M colors | - |
| Size | 4.0 inches | 4.5 inches | 4.0 inches |
| Resolution | 480 x 800 pixels (233 ppi) | 480 x 854 pixels (218 ppi) | 480 x 800 pixels (233 ppi) |
| Screen-to-Body Ratio | 57.86% | - | 59.52% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 3.0 MP, 2048x1536 pixels | 5 MP, 2592х1944 pixels | 3.15 MP, 2048x1536 pixels |
| Flash | No | LED flash | No |
| Features | - | Auto focus, Geo-tagging | - |
| Video | Yes | Yes | Yes |
| Front Camera | Yes [Similar] | Yes, VGA [Similar] | No [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | N/A | No | HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes | Yes, with A2DP | Yes, v3.0 |
| Wi-Fi | No | 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 | Yes, microUSB v2.0 |
| GPS | No | No | Yes |
| Browser | HTML | HTML | HTML |
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| Internal | 202 MB | 164 MB, 512 MB RAM | - |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 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 | 1750 mAh | 1400 mAh | 1500 mAh |
| Stand by | Up to 120 h | - | - |
| Talk Time | Up to 3 h 30 min | - | - |
