Phone Comparison - Karbonn A21+ vs Lava Iris X1 vs Micromax Canvas Fire A104
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| Manufacturer | Karbonn | Lava | Micromax |
| Announced | June 2013 | May 2014 | July 2014 |
| Status | Available - July 2013 | Available - May 2014 | Available - July 2014 |
| Colors | Black, White | Black, White, Blue, Silver | Black/Gold, White/Gold, Black/Silver, White/Silver |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension | - |
134 x 66 x 8.9 mm (5.28 x 2.6 x 0.35 in) |
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| Weight | - | 138 g (4.87 oz) | - |
| 2G Network | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 2100 | HSDPA 2100 | HSDPA 2100 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
| Build Features | Touch and Swipe Gestures | - | - |
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| OS | Android OS, v4.2 (Jelly Bean) | Android OS, v4.4.2 (KitKat) | Android OS, v4.4.2 (KitKat) |
| Processor | Dual-core 1 GHz, MTK 6577 | Quad-core 1.2 GHz, Broadcom BCM23550 | Quad-core 1.3 GHz, MediaTek MT6572M |
| GPU | PowerVR SGX531 | Broadcom VideoCore IV | Mali-400MP2 |
| RAM | 512 MB | 1 GB | 1 GB |
| Internal Memory | 4 GB (2.1 GB User Memory) | 4 GB ROM | 4 GB (650 MB for apps, 1.5 GB for mass storage) |
| 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 | IPS LCD Capacitive Touchscreen | Capacitive touchscreen |
| Colors | 16M colors | 16.7M colors | 16M colors |
| Size | 5.0 inches | 4.5 inches | 4.5 inches |
| Resolution | 480 x 854 pixels (196 ppi) | 480 x 854 pixels (218 ppi) | 480 x 800 pixels (207 ppi) |
| Screen-to-Body Ratio | - | 62.92% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio; FM recording | FM Radio with Recording | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592х1944 pixels | 8 MP, 3264x2448 pixels | 5 MP, 2592 х 1944 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR | Fixed Focus, Geo-tagging, Panorama, HDR |
| Video | Yes, 720p | Yes, 1080p | Yes, 1080p |
| Front Camera | Yes [Similar] | Yes, 2 MP, 720p [Similar] | VGA [Similar] |
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| GPRS | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Yes | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps |
| Edge | Class 12 | Yes | Class 12 |
| 3G | HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, HSUPA |
| Bluetooth | Yes, v4.0 with A2DP | Yes, v4.0 with A2DP | v4.0 |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | 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 | Yes, microUSB v2.0, USB On-the-go | microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes, with A-GPS |
| Browser | HTML5 | HTML5 | HTML |
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| Internal | 4 GB (2.1 GB User Memory), 512 MB RAM | 4 GB ROM, 1 GB RAM | 4 GB (650 MB for apps, 1.5 GB for mass storage), 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 | Li-Ion Battery |
| Capacity | 2000 mAh | 1800 mAh | 1900 mAh |
| Stand by | Up to 240 h | - | Up to 180 h |
| Talk Time | - | - | Up to 6 h |
