Phone Comparison - Lenovo Vibe X2 vs Xiaomi Redmi 2 vs Xiaomi Mi 4i
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| Manufacturer | Lenovo | Xiaomi | Xiaomi |
| Announced | September 2014 | January 2015 | April 2015 |
| Status | Available - October 2014 | Available - January 2015 | Available - April 2015 |
| Price | - | Rs. 5,999 ($88.22) [Similarly Priced] | Rs. 8,999 ($132.34) [Similarly Priced] |
| Colors | White, Gold, Red, Dark Grey | Black, White, Yellow, Pink, Green | Black, White, Blue, Yellow, Pink |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
140.2 x 68.6 x 7.3 mm (5.52 x 2.7 x 0.29 in) |
134 x 67.2 x 9.4 mm (5.28 x 2.65 x 0.37 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
| Weight | 120 g (4.23 oz) | 133 g (4.69 oz) | 130 g (4.59 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1700 / 1900 / 2100 | HSDPA 850 / 1900 / 2100 TD-SCDMA 1900 / 2100 |
HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE 800 / 1800 / 2100 / 2600 | LTE 1800 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41) | LTE |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.4 (KitKat) | Android OS, v4.4 (KitKat) | Android OS, v5.0 (Lollipop) |
| Processor | Octa-core 2.0 GHz, MediatTek MT6595m True8Core | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 | Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | PowerVR G600 | Adreno 306 | Adreno 405 |
| RAM | 2 GB | 1 GB | 2 GB |
| Internal Memory | 32 GB | 8 GB | 16/32 GB |
| External Memory | No | microSD, up to 32 GB | 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 | 5.0 inches | 4.7 inches | 5.0 inches |
| Resolution | 1080 x 1920 pixels (441 ppi) | 720 x 1280 pixels (312 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 71.52% | 67.83% | 71.57% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | - | FM Radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4160 x 3120 pixels | 8 MP, 3264 x 2448 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR, Sony Sensor, Panorama, Real-time HDR | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR |
| Video | 1080p@30fps | Yes, 1080p | 1080p@30fps |
| Front Camera | 5 MP [Similar] | 2 MP, 720p [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 42 Mbps; HSUPA; LTE, Cat4, 50 Mbps UL, 150 Mbps DL | HSPA, LTE Cat4 150/50 Mbps | HSPA, LTE |
| Bluetooth | v4.0, A2DP | v4.0, A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n/ac, dual band, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 32 GB, 2 GB RAM | 8 GB, 1 GB RAM / 16 GB, 2 GB RAM | 16/32 GB, 2 GB RAM |
| Expandable Storage | No | microSD, up to 32 GB | No |
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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 | Li-Po Battery | Li-Po Battery |
| Capacity | 2300 mAh | 2200 mAh | 3120 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) |
- | - |
