Phone Comparison - Lenovo K900 vs Nokia X2 vs Xiaomi Redmi 1S
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| Manufacturer | Lenovo | Nokia | Xiaomi |
| Announced | January 2013 | June 2014 | May 2014 |
| Status | Available - April 2013 | Available - June 2014 | Available - May 2014 |
| Colors | Black | Bright green, bright red, cyan, yellow, black, white | Black, Chinese Red, Metallic Gray/ blue, green, yellow panels |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
157 x 78 x 6.9 mm (6.18 x 3.07 x 0.27 in) |
121.7 x 68.3 x 11.1 mm (4.79 x 2.69 x 0.44 in) |
137 x 69 x 9.9 mm (5.39 x 2.72 x 0.39 in) |
| Weight | 162 g (5.71 oz) | 150 g (5.29 oz) | 158 g (5.57 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 |
| 3G Network | HSDPA 2100 | HSDPA 900 / 2100 | HSDPA 1900 / 2100 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - | - Scratch-resistant glass - ClearBlack display |
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| OS | Android OS, v4.2 (Jelly Bean) | Nokia X Software Platform 2.0 Based on Android OS, v4.3 (Jelly Bean) | Android OS, v4.3 (Jelly Bean) |
| Processor | Dual-core 2.0 GHz, Intel Atom Z2580 | Dual-core 1.2 GHz Cortex-A7, Qualcomm MSM8210 Snapdragon 200 | Quad-core 1.6 GHz Cortex-A7, Qualcomm MSM8228 Snapdragon |
| GPU | PowerVR SGX544 | Adreno 302 | Adreno 305 |
| RAM | 2 GB | 1 GB | 1 GB |
| Internal Memory | 16 GB | 4 GB | 8 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 2 |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.5 inches | 4.3 inches | 4.7 inches |
| Resolution | 1080 x 1920 pixels (401 ppi) | 480 x 800 pixels (217 ppi) | 720 x 1280 pixels (312 ppi) |
| Screen-to-Body Ratio | 67.94% | 63.29% | 64.61% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio | Stereo FM Radio with RDS | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, autofocus | 5 MP, 2592 х 1944 pixels | 8 MP, 3264 x 2448 pixels |
| Flash | dual-LED flash | LED Flash | LED flash |
| Features | Geo-tagging, Touch Focus, Face Detection | 1/4'' Sensor Size, Geo-tagging, Touch Focus, Panorama, Face Detection | Auto focus, 1.4 µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR |
| Video | Yes, 1080p@30fps | Yes, 720p@30fps | 1080p@30fps |
| Front Camera | Yes, 2 MP [Similar] | Yes, VGA, 480p [Similar] | 1.3 MP, 720p@30fps [Similar] |
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| GPRS | Yes | Up to 85.6 kbps | Yes |
| Edge | Yes | Up to 236.8 kbps | Yes |
| 3G | HSPA+ | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, HSUPA |
| Bluetooth | Yes, with A2DP | Yes, v4.0 with A2DP, HS | v4.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual band, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 | microUSB v2.0, USB On-the-go |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes, with A-GPS |
| Browser | HTML5 | HTML | HTML5 |
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| Internal | 16 GB, 2 GB RAM | 4 GB, 1 GB RAM | 8 GB, 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-Po Battery |
| Capacity | 2500 mAh | 1800 mAh | 2000 mAh |
| Stand by | - | Up to 552 h | - |
| Talk Time | - | Up to 10 h (2G) Up to 13 h (3G) |
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