Phone Comparison - Samsung I9300 Galaxy S III (S3) vs Lenovo K900 vs Karbonn A21
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| Manufacturer | Samsung | Lenovo | Karbonn |
| Announced | May 2012 | January 2013 | 2012 |
| Status | Available - May 2012 | Available - April 2013 | Available |
| Colors | Blue, White | Black | Pearl White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
136.6 x 70.6 x 8.6 mm (5.38 x 2.78 x 0.34 in) |
157 x 78 x 6.9 mm (6.18 x 3.07 x 0.27 in) |
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| Weight | 133 g (4.69 oz) | 162 g (5.71 oz) | - |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 2100 | HSDPA 2100 |
| 4G Network | LTE (regional) | - | - |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.0.4 (Ice Cream Sandwich) | Android OS, v4.2 (Jelly Bean) | Android OS, v4.0 (Ice Cream Sandwich) |
| Processor | Quad-core 1.4 GHz Cortex-A9, Exynos 4212 Quad | Dual-core 2.0 GHz, Intel Atom Z2580 | Dual-core 1.2 GHz |
| GPU | Mali-400MP | PowerVR SGX544 | - |
| RAM | 1 GB | 2 GB | 512 MB |
| Internal Memory | 16/32/64 GB storage | 16 GB | 4 GB |
| External Memory | microSD, up to 64 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | Super AMOLED capacitive touchscreen | IPS LCD capacitive touchscreen | TFT capacitive touchscreen |
| Colors | 16M colors | 16M colors | 256K colors |
| Size | 4.8 inches | 5.5 inches | 4.5 inches |
| Resolution | 720 x 1280 pixels (306 ppi) | 1080 x 1920 pixels (401 ppi) | 480 x 800 pixels (207 ppi) |
| Screen-to-Body Ratio | 65.84% | 67.94% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | Stereo FM radio | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels | 13 MP, autofocus | 5 MP, 2592х1944 pixels |
| Flash | LED flash | dual-LED flash | LED flash |
| Features | Auto focus, Simultaneous HD Video And Image Recording, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization | Geo-tagging, Touch Focus, Face Detection | Auto focus, Geo-tagging, Face Detection |
| Video | Yes, 1080p@30fps | Yes, 1080p@30fps | Yes |
| Front Camera | Yes, 1.9 MP, 720p@30fps [Similar] | Yes, 2 MP [Similar] | Yes, 1.3 MP [Similar] |
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| GPRS | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Yes | Yes |
| Edge | Class 12 | Yes | Yes |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSPA+ | HSDPA, 7.2 Mbps |
| Bluetooth | Yes, v4.0 with A2DP, EDR | Yes, with A2DP | Yes, v2.1 with A2DP |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual band, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n |
| USB | Yes, microUSB v2.0 (MHL), USB On-the-go | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS support | Yes, with A-GPS support |
| Browser | HTML, Adobe Flash | HTML5 | HTML |
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| Internal | 16/32/64 GB storage, 1 GB RAM | 16 GB, 2 GB RAM | 4 GB, 512 MB RAM |
| Expandable Storage | microSD, up to 64 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 | Standard battery, Li-Ion | Li-Ion battery | Li-Ion Battery |
| Capacity | 2100 mAh | 2500 mAh | 1800 mAh |
| Stand by | Up to 830Hr (2G)/up to 770Hr hours (3G) | - | Up to 200 h |
| Talk Time | Up to 1350Min (2G)/up to 700Min hours (3G) | - | Up to 5 h |
