Phone Comparison - Karbonn A25 vs Samsung E330S Galaxy S4 LTE-A vs Karbonn Smart A26
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| Manufacturer | Karbonn | Samsung | Karbonn |
| Announced | May 2013 | June 2013 | June 2013 |
| Status | Available - May 2013 | Available - July 2013 | Available - July 2013 |
| Colors | White, Black | Arctic Blue, Red Aurora | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension | - |
136.6 x 69.8 x 7.9 mm (5.38 x 2.75 x 0.31 in) |
146 x 74 x 8.65 mm (5.75 x 2.91 x 0.34 in) |
| Weight | - | 131 g (4.62 oz) | - |
| 2G Network | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 | GSM 900 / 1800 - SIM 1 & SIM 2 |
| 3G Network | No | HSDPA 1900 / 2100 | No |
| 4G Network | - | LTE 850 / 1800 | - |
| 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, v4.2.2 (Jelly Bean) | Android OS, v4.1.2 (Jelly Bean) |
| Processor | Dual-core 1 GHz | Quad-core 2.3 GHz Krait 400, Qualcomm MSM8974 Snapdragon 800 | Dual-core 1 GHz |
| GPU | - | Adreno 330 | - |
| RAM | 512 MB | 2 GB | N/A |
| Internal Memory | 512 MB ROM | 32 GB (25 GB user available) | 4 GB (2.12 GB user available), 512 MB |
| External Memory | microSD, up to 32 GB | microSD, up to 64 GB | microSD, up to 32 GB |
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| Type | TFT capacitive touchscreen | Super AMOLED capacitive touchscreen, Corning Gorilla Glass 3 | TFT Capacitive Touchscreen |
| Colors | - | 16M colors | 16M colors |
| Size | 5.0 inches | 5.0 inches | 5.0 inches |
| Resolution | 480 x 800 pixels (187 ppi) | 1080 x 1920 pixels (441 ppi) | 480 x 854 pixels (196 ppi) |
| Screen-to-Body Ratio | - | 72.15% | 63.72% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | No | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592х1944 pixels | 13 MP, 4128 x 3096 pixels | 5 MP, 2592х1944 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging | Auto focus, Dual Shot, Simultaneous HD Video And Image Recording, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization, HDR | Geo-tagging, Touch Focus, Face Detection |
| Video | Yes | Yes, 1080p@30fps, dual-video rec. | Yes |
| Front Camera | Yes, VGA [Similar] | Yes, 2 MP,1080p@30fps, dual video call [Similar] | Yes, VGA [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes, Class 12 | Yes | Yes |
| 3G | No | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE-A, Cat4, 50 Mbps UL, 150 Mbps DL | No |
| Bluetooth | Yes, v3.0 | Yes, v4.0 with A2DP, EDR, LE | Yes, with A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, DLNA, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 (MHL 2), USB On-the-go, USB Host | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support and GLONASS | No |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 512 MB ROM, 512 MB RAM | 32 GB (25 GB user available), 2 GB RAM | 4 GB (2.12 GB user available), 512 MB |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 64 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 | 2600 mAh | 2000 mAh |
| Stand by | - | Up to 360 h (3G) | - |
| Talk Time | - | Up to 23 h (3G) | - |
