Phone Comparison - Karbonn A21 vs Alcatel One Touch Idol
Karbonn A21.jpg)
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Alcatel One Touch Idol.jpg)
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| Manufacturer | Karbonn | Alcatel |
| Announced | 2012 | January 2013 |
| Status | Available | Available - May 2013 |
| Colors | Pearl White | Silver, Slate, Pink, Red, Yellow |
| Form Factor | Candybar | Candybar |
| Dimension | - |
133 x 67.5 x 7.9 mm (5.24 x 2.66 x 0.31 in) |
| Weight | - | 109 g (3.84 oz) |
| 2G Network | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 2100 | HSDPA 900 / 2100 HSDPA 850 / 1900 / 2100 |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
| Build Features | - | Dragon Trail Glass |
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| OS | Android OS, v4.0 (Ice Cream Sandwich) | Android OS, v4.1 (Jelly Bean) |
| Processor | Dual-core 1.2 GHz [Similar] | Dual-core 1 GHz, MTK 6577+ [Similar] |
| GPU | - | - |
| RAM | 512 MB [Browse Similar] | N/A |
| Internal Memory | 4 GB | 2.4 GB / 13.3 GB (dual SIM version) storage, 512 MB |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB (dual SIM version) |
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| Type | TFT capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 256K colors | 16M colors |
| Size | 4.5 inches [Similar] | 4.66 inches [Similar] |
| Resolution | 480 x 800 pixels (207 ppi) [Similar] | 540 x 960 pixels (236 ppi) [Similar] |
| Screen-to-Body Ratio | - | 66.89% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | Stereo FM radio with RDS |
| Games | Yes + Downloadable | Yes + Downloadable |
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| Rear Camera | 5 MP, 2592х1944 pixels [Similar] | 8 MP, 3264 x 2448 pixels [Similar] |
| Flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Face Detection | Auto focus, Geo-tagging, Touch Focus |
| Video | Yes | Yes |
| Front Camera | Yes, 1.3 MP [Similar] | Yes, 2 MP [Similar] |
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| GPRS | Yes | Yes |
| Edge | Yes | Yes |
| 3G | HSDPA, 7.2 Mbps | HSDPA 7.2 Mbps |
| Bluetooth | Yes, v2.1 with A2DP | Yes, v3.0 with A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support |
| Browser | HTML | HTML |
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| Internal | 4 GB, 512 MB RAM | 2.4 GB / 13.3 GB (dual SIM version) storage, 512 MB |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB (dual SIM version) |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| Type | Li-Ion Battery | Li-Ion Battery |
| Capacity | 1800 mAh | 1800 mAh |
| Stand by | Up to 200 h | Up to 415 h (2G) Up to 410 h (3G) |
| Talk Time | Up to 5 h | Up to 7 h 10 min (2G) Up to 3 h 30 min (3G) |
