Phone Comparison - Karbonn A21 vs Samsung Galaxy Trend II Duos S7572 vs Motorola Moto G (Gen 2)
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| Manufacturer | Karbonn | Samsung | Motorola |
| Announced | 2012 | April 2013 | September 2014 |
| Status | Available | Available - May 2013 | Available - September 2014 |
| Colors | Pearl White | White, Gray | White, Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension | - |
121.5 x 63.1 x 11.1 mm (4.78 x 2.48 x 0.44 in) |
141.5 x 70.7 x 11 mm (5.57 x 2.78 x 0.43 in) |
| Weight | - | 128.5 g (4.52.0.18 oz) | 149 g (5.26 oz) |
| 2G Network | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 CDMA2000 1xEV-DO - CDMA version |
| 3G Network | HSDPA 2100 | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700 / 1900 / 2100 - USA version |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.0 (Ice Cream Sandwich) | Android OS, v4.1 (Jelly Bean) | Android OS, v4.4.4 (KitKat), upgradable to Android L |
| Processor | Dual-core 1.2 GHz | Dual-core 1.2 GHz | Quad-core 1.2 GHz Cortex-A7, Qualcomm MSM8226 Snapdragon 400 |
| GPU | - | - | Adreno 305 |
| RAM | 512 MB | 512 MB | 1 GB |
| Internal Memory | 4 GB | 4 GB | 8/16 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | TFT capacitive touchscreen | TFT capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3 |
| Colors | 256K colors | 16M colors | 16M colors |
| Size | 4.5 inches | 4.0 inches | 5.0 inches |
| Resolution | 480 x 800 pixels (207 ppi) | 480 x 800 pixels (233 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | - | 59.52% | 68.76% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | No | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592х1944 pixels | 3.15 MP, 2048x1536 pixels | 8 MP, 3264 x 2448 pixels |
| Flash | LED flash | No | LED flash |
| Features | Auto focus, Geo-tagging, Face Detection | - | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama |
| Video | Yes | Yes | 720p@30fps, stereo sound rec., HDR |
| Front Camera | Yes, 1.3 MP [Similar] | No [Similar] | 2 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 7.2 Mbps | HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes, v2.1 with A2DP | Yes, v3.0 | v4.0, 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 a/b/g/n/ac, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 | microUSB v2.0, USB Host |
| GPS | Yes, with A-GPS support | Yes | Yes, with A-GPS, GLONASS |
| Browser | HTML | HTML | HTML5 |
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| Internal | 4 GB, 512 MB RAM | 4 GB, 512 MB RAM | 8/16 GB, 1 GB 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 | Non-removable Li-Ion Battery |
| Capacity | 1800 mAh | 1500 mAh | 2070 mAh |
| Stand by | Up to 200 h | - | - |
| Talk Time | Up to 5 h | - | - |
