Phone Comparison - Samsung Rex 90 S5292 vs Samsung GALAXY Pocket Neo Duos S5312 vs Karbonn A12+
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| Manufacturer | Samsung | Samsung | Karbonn |
| Announced | February 2013 | April 2013 | October 2013 |
| Status | Available - March 2013 | Available - May 2013 | Available - October 2013 |
| Colors | White, Brown | White, Black, Silver | White, Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
113 x 61.9 x 11.9 mm (4.45 x 2.44 x 0.47 in) |
105 x 57.8 x 11.8 mm (4.13 x 2.28 x 0.46 in) |
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| Weight | - | 100.5 g (3.53.0.18 oz) | - |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - 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 900 / 2100 | HSDPA 2100 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
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| OS | - | Android OS, v4.1.2 (Jelly Bean) | Android OS, v4.2.2 (Jelly Bean) |
| Processor | - | 850 MHz Cortex A-9 | Dual-core 1.3 GHz, MTK 6572 |
| GPU | - | - | Mali-400MP |
| RAM | N/A | 512 MB | 512 MB |
| Internal Memory | 10 MB | 4 GB | 4 GB (1.27 GB for apps, 1.24 GB user available) |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | TFT touchscreen | TFT capacitive touchscreen | IPS LCD Capacitive Touchscreen, Wide Viewing Angle |
| Colors | 262K colors | 262K colors | 16M colors |
| Size | 3.5 inches | 3.0 inches | 4.0 inches |
| Resolution | 320 x 480 pixels (165 ppi) | 240 x 320 pixels (133 ppi) | 480 x 800 pixels (233 ppi) |
| Screen-to-Body Ratio | 52.04% | 46.15% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio with Recording | Stereo FM radio with RDS, FM r | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 3.15 MP, 2048x1536 pixels | 2 MP, 1600x1200 pixels | 5 MP, 2592х1944 pixels |
| Flash | No | No | LED flash |
| Features | - | Fixed Focus, CMOS Sensor | Auto-focus, Geo-tagging, Face Detection, Panorama |
| Video | Yes | Yes, QVGA@15fps | Yes, 720p |
| Front Camera | No [Similar] | No [Similar] | Yes, 2 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | N/A | HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes, v3.0 | Yes, v4.0 | Yes, v2.0 A2DP, EDR |
| 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, USB Host | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | No | Yes, with A-GPS support and GLONASS | Yes, with A-GPS support |
| Browser | Yes | HTML | HTML |
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| Phonebook | Yes, 1000 | Practically unlimited entries and fields, Photocall | Practically unlimited entries and fields, Photocall |
| Call Records | Yes | Practically unlimited | Practically unlimited |
| Internal | 10 MB | 4 GB, 512 MB RAM | 4 GB (1.27 GB for apps, 1.24 GB user available), 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 | 1000 mAh | 1200 mAh | 1400 mAh |
| Stand by | - | Up to 300 h | - |
| Talk Time | Up to 15 h | Up to 6 h | - |
