Phone Comparison - Karbonn KT21 Express vs Sony Xperia M Dual
Karbonn KT21 Express.jpg)
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Sony Xperia M Dual.jpg)
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| Manufacturer | Karbonn | Sony |
| Announced | 2012 | June 2013 |
| Status | Available | Available - September 2013 |
| Colors | Black | Black, White, Purple, Yellow |
| Form Factor | Candybar | Candybar |
| Dimension | - |
124 x 62 x 9.3 mm (4.88 x 2.44 x 0.37 in) |
| Weight | - | 115 g (4.06 oz) |
| 2G Network | GSM - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Both Versions) |
| 3G Network | N/A | HSDPA 900 / 2100 - C2005 HSDPA 850 / 1700 / 1900 / 2100 - C2004 |
| Messaging | SMS, MMS | SMS, MMS, Push Mail, EMail, IM |
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| OS | - | Android OS, v4.1 (Jelly Bean) |
| Processor | - | Dual-core 1 GHz Krait, Qualcomm MSM8227 [Similar] |
| GPU | - | Adreno 305 [Similar] |
| RAM | N/A | 1 GB [Browse Similar] |
| Internal Memory | - | 4 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | TFT capacitive touchscreen | TFT capacitive touchscreen |
| Colors | TFT capacitive touchscreen | 16M colors |
| Size | 2.8 inches [Similar] | 4.0 inches [Similar] |
| Resolution | 240 x 320 pixels (143 ppi) | 480 x 854 pixels (245 ppi) [Similar] |
| Screen-to-Body Ratio | - | 57.31% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio, FM recording | Stereo FM radio with RDS |
| Games | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 3.15 MP, 2048x1536 pixels [Similar] | 5 MP, 2592х1944 pixels [Similar] |
| Flash | LED flash | LED flash |
| Features | - | Auto focus, Geo-tagging, Touch Focus, Image Stabilization, HDR, Panorama |
| Video | Yes | Yes, 720p@30fps |
| Front Camera | No [Similar] | Yes, VGA [Similar] |
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| GPRS | Yes | Up to 86 kbps |
| Edge | Yes | Up to 237 kbps |
| 3G | N/A | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes | Yes, v4.0 with A2DP, ANT+ |
| Wi-Fi | No | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot |
| USB | Yes | Yes, microUSB v2.0 |
| GPS | No | Yes, with A-GPS support |
| Browser | Yes | HTML5 |
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| Phonebook | 2000 entries | Practically unlimited entries and fields, Photocall |
| Call Records | Yes | Practically unlimited |
| Internal | - | 4 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | Li-Ion Battery | Li-Ion Battery |
| Capacity | 1000 mAh | 1750 mAh |
| Stand by | - | Up to 498 h (2G) Up to 454 h (3G) |
| Talk Time | - | Up to 10 h 16 min (2G) Up to 9 h (3G) |
