Phone Comparison - Lenovo Vibe Z K910 vs Xiaomi Mi 4 vs Lenovo Vibe Z2
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| Manufacturer | Lenovo | Xiaomi | Lenovo |
| Announced | November 2013 | July 2014 | September 2014 |
| Status | Available - January 2014 | Available - Q3 2014 | Available - October 2014 |
| Colors | Black | Black, White | White, Gold, Titanium |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
7.9 mm thickness (0.31 in thickness) |
139.2 x 68.5 x 8.9 mm (5.48 x 2.7 x 0.35 in) |
148.5 x 76.4 x 7.8 mm (5.85 x 3.01 x 0.31 in) |
| Weight | 147 g (5.19 oz) | 149 g (5.26 oz) | 158 g (5.57 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1700 / 1900 / 2100 - SIM 1 & SIM 2 |
| 4G Network | LTE | LTE | LTE 800 / 1800 / 2100 / 2600 - SIM 1 & SIM 2 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.3 (Jelly Bean) | Android OS, v4.4.3 (KitKat) | Android OS, v4.4 (KitKat) |
| Processor | Quad-core 2.2 GHz Krait 400, Qualcomm Snapdragon 800 | Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 | Quad-core 1.2 GHz Krait 400, Qualcomm MSM8916 Snapdragon 410 |
| GPU | Adreno 330 | Adreno 330 | Adreno 306 |
| RAM | 2 GB | 3 GB | 2 GB |
| Internal Memory | 16 GB ROM | 16/64 GB | 32 GB |
| External Memory | microSD, up to 32 GB | No | No |
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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 | 5.5 inches |
| Resolution | 1080 x 1920 pixels (401 ppi) | 1080 x 1920 pixels (441 ppi) | 720 x 1280 pixels (267 ppi) |
| Screen-to-Body Ratio | - | 72.14% | 73.51% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | - | FM radio | - |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels | 13 MP, 4160 x 3120 pixels |
| Flash | Dual-LED flash | Dual-LED Flash | optical image stabil |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection | 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 |
| Video | Yes, 1080p@30fps | 2160p, 1080p@30fps, HDR | 1080p@30fps |
| Front Camera | Yes, 5 MP [Similar] | 8 MP, 1080p@30fps [Similar] | 8 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, Cat3, 50 Mbps UL, 150 Mbps DL | DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE | HSDPA, 42 Mbps; HSUPA; LTE, Cat4, 50 Mbps UL, 150 Mbps DL |
| Bluetooth | Yes, v4.0 with A2DP | v4.0, A2DP | v4.0, A2DP |
| Wi-Fi | 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 | Wi-Fi 802.11 b/g/n/ac, dual band, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | microUSB v2.0 (MHL), USB On-the-go | microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16 GB ROM, 2 GB RAM | 16/64 GB, 3 GB RAM | 32 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32 GB | 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 |
| Capacity | - | 3080 mAh | 3000 mAh |
| Stand by | - | - | Up to 408 h (3G) |
| Talk Time | - | - | Up to 30 h (2G) Up to 28 h (3G) |
