Phone Comparison - Lenovo K900 vs Xiaomi Mi 4i vs Xiaomi Redmi 2 Prime
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| Manufacturer | Lenovo | Xiaomi | Xiaomi |
| Announced | January 2013 | April 2015 | August 2015 |
| Status | Available - April 2013 | Available - April 2015 | Available - August 2015 |
| Price | - | Rs. 8,999 ($132.34) [Similarly Priced] | Rs. 6,999 ($102.93) [Similarly Priced] |
| Colors | Black | Black, White, Blue, Yellow, Pink | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
157 x 78 x 6.9 mm (6.18 x 3.07 x 0.27 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
134 x 67.2 x 9.4 mm (5.28 x 2.65 x 0.37 in) |
| Weight | 162 g (5.71 oz) | 130 g (4.59 oz) | 133 g (4.69 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - 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 850 / 900 / 1900 / 2100 | HSDPA 900 / 2100 |
| 4G Network | - | LTE | LTE |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.2 (Jelly Bean) | Android OS, v5.0 (Lollipop) | Android OS, v4.4.4 (KitKat) |
| Processor | Dual-core 2.0 GHz, Intel Atom Z2580 | Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 |
| GPU | PowerVR SGX544 | Adreno 405 | Adreno 306 |
| RAM | 2 GB | 2 GB | 2 GB |
| Internal Memory | 16 GB | 16/32 GB | 16 GB (13.78 GB for Apps and Phone Storage) |
| External Memory | microSD, up to 32 GB | No | microSD, up to 32 GB |
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| Type | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.5 inches | 5.0 inches | 4.7 inches |
| Resolution | 1080 x 1920 pixels (401 ppi) | 1080 x 1920 pixels (441 ppi) | 720 x 1280 pixels (312 ppi) |
| Screen-to-Body Ratio | 67.94% | 71.57% | 67.83% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio | FM radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, autofocus | 13 MP, 4128 x 3096 pixels | 8 MP, 3264 x 2448 pixels |
| Flash | dual-LED flash | LED flash | LED flash |
| Features | Geo-tagging, Touch Focus, Face Detection | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR | Auto focus, 1.4 µm Pixel Size, BSI Sensor, Geo-tagging, Touch Focus, Face/smile Detection, HDR |
| Video | Yes, 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, 2 MP [Similar] | 5 MP [Similar] | 2 MP, 720p [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA+ | HSPA, LTE | HSPA, LTE Cat4 150/50 Mbps |
| Bluetooth | Yes, with A2DP | v4.0, A2DP | v4.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual band, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | Yes, microUSB v2.0 | microUSB v2.0 | microUSB v2.0, USB Host |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, Beidou |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16 GB, 2 GB RAM | 16/32 GB, 2 GB RAM | 16 GB (13.78 GB for Apps and Phone Storage), 2 GB RAM |
| Expandable Storage | microSD, up to 32 GB | No | 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-Po Battery | Li-Po Battery |
| Capacity | 2500 mAh | 3120 mAh | 2200 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
