Phone Comparison - Lenovo Vibe Z K910 vs Lenovo Vibe X2 vs Xiaomi Mi 4 LTE
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| Manufacturer | Lenovo | Lenovo | Xiaomi |
| Announced | November 2013 | September 2014 | December 2014 |
| Status | Available - January 2014 | Available - October 2014 | Available - December 2014 |
| Price | - | - | Rs. 11,999 ($176.46) [Similarly Priced] |
| Colors | Black | White, Gold, Red, Dark Grey | White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
7.9 mm thickness (0.31 in thickness) |
140.2 x 68.6 x 7.3 mm (5.52 x 2.7 x 0.29 in) |
139.2 x 68.5 x 8.9 mm (5.48 x 2.7 x 0.35 in) |
| Weight | 147 g (5.19 oz) | 120 g (4.23 oz) | 149 g (5.26 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 2100 | HSDPA 850 / 900 / 1700 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE | LTE 800 / 1800 / 2100 / 2600 | LTE - international model |
| 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 (KitKat) | Android OS, v4.4.3 (KitKat) |
| Processor | Quad-core 2.2 GHz Krait 400, Qualcomm Snapdragon 800 | Octa-core 2.0 GHz, MediatTek MT6595m True8Core | Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 |
| GPU | Adreno 330 | PowerVR G600 | Adreno 330 |
| RAM | 2 GB | 2 GB | 3 GB |
| Internal Memory | 16 GB ROM | 32 GB | 16 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 | 5.0 inches |
| Resolution | 1080 x 1920 pixels (401 ppi) | 1080 x 1920 pixels (441 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | - | 71.52% | 72.14% |
| 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, 4160 x 3120 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | Dual-LED flash | LED flash | dual-LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Auto focus, 1/3' Sensor Size, 1.12�m Pixel Size, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR |
| Video | Yes, 1080p@30fps | 1080p@30fps | 2160p@30fps, 1080p@30fps, 720p@120fps, HDR |
| Front Camera | Yes, 5 MP [Similar] | 5 MP [Similar] | 8 MP, 1080p@30fps [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 | HSDPA, 42 Mbps; HSUPA; LTE, Cat4, 50 Mbps UL, 150 Mbps DL | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| 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 b/g/n/ac, dual band, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, 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 support, GLONASS, Beidou |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16 GB ROM, 2 GB RAM | 32 GB, 2 GB RAM | 16 GB, 3 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-Po Battery | Non-removable Li-Ion Battery |
| Capacity | - | 2300 mAh | 3080 mAh |
| Stand by | - | Up to 228 h (2G) Up to 216 h (3G) |
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| Talk Time | - | Up to 17 h (2G) Up to 19 h (3G) |
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