Phone Comparison - Xiaomi Mi 4 vs Lenovo Vibe Z2 Pro vs Samsung Galaxy Alpha (S801)
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| Manufacturer | Xiaomi | Lenovo | Samsung |
| Announced | July 2014 | August 2014 | August 2014 |
| Status | Available - Q3 2014 | Available - September 2014 | Available - September 2014 |
| Colors | Black, White | Black, Gold, White | Charcoal Black, Sleek Silver, Dazzling White, Frosted Gold, Scub |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
139.2 x 68.5 x 8.9 mm (5.48 x 2.7 x 0.35 in) |
156 x 81.3 x 7.7 mm (6.14 x 3.2 x 0.3 in) |
132.4 x 65.5 x 6.7 mm (5.21 x 2.58 x 0.26 in) |
| Weight | 149 g (5.26 oz) | 179 g (6.31 oz) | 115 g (4.06 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1700 / 1900 / 2100 | HSDPA |
| 4G Network | LTE | LTE 800 / 850 / 900 / 1800 / 2100 / 2600 | LTE |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.4.3 (KitKat) | Android OS, v4.4.2 (KitKat) | Android OS, v4.4.4 (KitKat) |
| Processor | Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 | Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 | Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 |
| GPU | Adreno 330 | Adreno 330 | Adreno 330 |
| RAM | 3 GB | 3 GB | 2 GB |
| Internal Memory | 16/64 GB | 32 GB | 32 GB |
| External Memory | No | No | No |
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| Type | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen | Super AMOLED capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.0 inches | 6.0 inches | 4.7 inches |
| Resolution | 1080 x 1920 pixels (441 ppi) | 1440 x 2560 pixels (490 ppi) | 720 x 1280 pixels (312 ppi) |
| Screen-to-Body Ratio | 72.14% | 78.10% | 70.43% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | - | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4128 x 3096 pixels | 16 MP, 3456 x 4608 pixels | 12 MP, 4128 x 3096 pixels |
| Flash | Dual-LED Flash | optical image stabil | LED flash |
| Features | Auto focus, 1/3' Sensor Size, 1.12µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR | Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Auto focus, Dual Camera, Geo-tagging, Touch Focus, Face And Smile Detection, Panorama, HDR |
| Video | 2160p, 1080p@30fps, HDR | 2160p@30fps, 1080p@30fps, optical stabilization | 2160p@30fps, 1080p@60fps, 720p@120fps |
| Front Camera | 8 MP, 1080p@30fps [Similar] | Yes [Similar] | 2.1 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE | HSDPA, 42 Mbps; HSUPA; LTE, Cat4, 50 Mbps UL, 150 Mbps DL | HSDPA, 42 Mbps, HSUPA; LTE-A, Cat6, 300 Mbps DL, 50 Mbps UL |
| Bluetooth | v4.0, A2DP | v4.0, A2DP | v4.0, A2DP, EDR, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual band, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot |
| USB | microUSB v2.0 (MHL), USB On-the-go | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, Beidou |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16/64 GB, 3 GB RAM | 32 GB, 3 GB RAM | 32 GB, 2 GB RAM |
| Expandable Storage | No | No | No |
| 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 | Non-removable Li-Ion Battery | Non-removable Li-Po Battery | Li-Ion Battery |
| Capacity | 3080 mAh | 4000 mAh | 1860 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
