Phone Comparison - LG G Flex vs Xiaomi Mi 4 vs Lenovo Vibe X2
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| Manufacturer | LG | Xiaomi | Lenovo |
| Announced | October 2013 | July 2014 | September 2014 |
| Status | Available - November 2013 | Available - Q3 2014 | Available - October 2014 |
| Colors | Titan Silver | Black, White | White, Gold, Red, Dark Grey |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
160.5 x 81.6 x 7.9 - 8.7 mm (6.32 x 3.21 x 0.31 - 0.34 in) |
139.2 x 68.5 x 8.9 mm (5.48 x 2.7 x 0.35 in) |
140.2 x 68.6 x 7.3 mm (5.52 x 2.7 x 0.29 in) |
| Weight | 177 g (6.24 oz) | 149 g (5.26 oz) | 120 g (4.23 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1700 / 1900 / 2100 |
| 4G Network | LTE 850 / 1800 LTE-A | LTE | LTE 800 / 1800 / 2100 / 2600 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | Self-healing coating on the back | - | - |
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| OS | Android OS, v4.2.2 (Jelly Bean) | Android OS, v4.4.3 (KitKat) | Android OS, v4.4 (KitKat) |
| Processor | Quad-core 2.26 GHz Krait 400, Qualcomm MSM8974 Snapdragon 800 | Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 | Octa-core 2.0 GHz, MediatTek MT6595m True8Core |
| GPU | Adreno 330 | Adreno 330 | PowerVR G600 |
| RAM | 2 GB | 3 GB | 2 GB |
| Internal Memory | 32 GB | 16/64 GB | 32 GB |
| External Memory | No | No | No |
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| Type | Curved P-OLED (Real RGB) | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 6.0 inches | 5.0 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (245 ppi) | 1080 x 1920 pixels (441 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 75.63% | 72.14% | 71.52% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| 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 | 13 MP, 4128 x 3096 pixels | 13 MP, 4160 x 3120 pixels |
| Flash | LED flash | Dual-LED Flash | LED flash |
| Features | Simultaneous Video And Image Recording, Geo-tagging, Face Detection, HDR | Auto focus, 1/3' Sensor Size, 1.12µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR |
| Video | Yes, 1080p@60fps, HDR, stereo sound rec., video stabilization | 2160p, 1080p@30fps, HDR | 1080p@30fps |
| Front Camera | Yes, 2.1 MP, 1080p@30fps [Similar] | 8 MP, 1080p@30fps [Similar] | 5 MP [Similar] |
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| GPRS | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Yes | Yes |
| Edge | Class 12 | Yes | Yes |
| 3G | HSDPA, 42 Mbps; HSUPA, 21 Mbps; LTE, Cat4, 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, LE | v4.0, A2DP | v4.0, A2DP |
| 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/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 (SlimPort), USB On-the-go, USB Host | microUSB v2.0 (MHL), USB On-the-go | microUSB v2.0 |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 32 GB, 2 GB RAM | 16/64 GB, 3 GB RAM | 32 GB, 2 GB RAM |
| Expandable Storage | No | No | No |
| USB OTG | Supported | 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 | Non-removable Li-Po Battery |
| Capacity | 3500 mAh | 3080 mAh | 2300 mAh |
| Stand by | - | - | Up to 228 h (2G) Up to 216 h (3G) |
| Talk Time | - | - | Up to 17 h (2G) Up to 19 h (3G) |
