Phone Comparison - Apple iPhone 3GS vs Karbonn A21+ vs Intex Cloud Y2
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| Manufacturer | Apple | Karbonn | Intex |
| Announced | June 2009 | June 2013 | October 2013 |
| Status | Available - June 2009 | Available - July 2013 | Available - October 2013 |
| Colors | Black, White | Black, White | White, Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
115.5 x 62.1 x 12.3 mm (4.55 x 2.44 x 0.48 in) |
- |
123.78 x 63.86 x 11 mm (4.87 x 2.51 x 0.43 in) |
| Weight | 135 g (4.76 oz) | - | 114 g (4.02 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 1900 / 2100 | HSDPA 2100 | HSDPA 2100 |
| Messaging | SMS, MMS | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - | Touch and Swipe Gestures | - |
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| OS | iPhone OS 3, upgradable to iOS 5 | Android OS, v4.2 (Jelly Bean) | Android OS, v4.2.2 (Jelly Bean) |
| Processor | 600 MHz Cortex-A8 | Dual-core 1 GHz, MTK 6577 | Dual-core 1.2 GHz, MTK 6572 |
| GPU | PowerVR SGX535 | PowerVR SGX531 | Mali-400MP |
| RAM | 256 MB | 512 MB | 512 MB |
| Internal Memory | 8/16/32 GB storage | 4 GB (2.1 GB User Memory) | 4 GB (User Memory: 2.26 GB) |
| External Memory | No | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | TFT capacitive touchscreen | TFT Capacitive Touchscreen | TFT Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.5 inches | 5.0 inches | 4.0 inches |
| Resolution | 320 x 480 pixels (165 ppi) | 480 x 854 pixels (196 ppi) | 480 x 800 pixels (233 ppi) |
| Screen-to-Body Ratio | 50.75% | - | 57.73% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | FM radio; FM recording | FM radio |
| Games | Yes | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 3.15 MP, 2048x1536 pixels | 5 MP, 2592х1944 pixels | 5 MP, 2592х1944 pixels |
| Flash | No | LED flash | LED flash |
| Features | Auto focus, Touch Focus, Geo-tagging | Auto focus, Geo-tagging, Touch Focus | Fixed-focus, Geo-tagging, Face Detection, Panorama |
| Video | Yes, VGA@30fps, video geo-tagging | Yes, 720p | Yes, 720p |
| Front Camera | No [Similar] | Yes [Similar] | Yes, 1.3 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 | 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, headset support only | Yes, v4.0 with A2DP | Yes, v2.0 A2DP, EDR |
| Wi-Fi | Wi-Fi 802.11b/g | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot |
| USB | Yes, v2.0 | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes |
| Browser | HTML (Safari) | HTML5 | HTML |
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| Internal | 8/16/32 GB storage, 256 MB RAM | 4 GB (2.1 GB User Memory), 512 MB RAM | 4 GB (User Memory: 2.26 GB), 512 MB RAM |
| Expandable Storage | No | 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 | Standard battery, Li-Ion | Li-Ion Battery | Li-Ion Battery |
| Capacity | 2000 mAh | 1500 mAh | |
| Stand by | Up to 300 h | Up to 240 h | Up to 300 h |
| Talk Time | Up to 12 h (2G) Up to 5 h (3G) |
- | Up to 7 h |
