Phone Comparison - Lenovo Vibe X2 vs Asus Zenfone Selfie vs Lenovo K4 Note
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| Manufacturer | Lenovo | Asus | Lenovo |
| Announced | September 2014 | June 2015 | January 2016 |
| Status | Available - October 2014 | Available - August 2015 | Available - January 2016 |
| Price | - | Rs. 11,999 ($176.46) [Similarly Priced] | Rs. 10,999 ($161.75) [Similarly Priced] |
| Colors | White, Gold, Red, Dark Grey | Various | Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
140.2 x 68.6 x 7.3 mm (5.52 x 2.7 x 0.29 in) |
156.5 x 77.2 x 10.8 ~ 3.9 mm (6.16 x 3.04 x 0.43 ~ 0.15 in) |
153.6 x 76.5 x 9.15 mm (6.05 x 3.01 x 0.36 in) |
| Weight | 120 g (4.23 oz) | 170 g (6 oz) | 158 g (5.57 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 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 / 900 / 1900 / 2100 | HSDPA 900 / 1900 / 2100 |
| 4G Network | LTE 800 / 1800 / 2100 / 2600 | LTE band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800) - Global LTE band 1(2100), 2(1900), 3(1800), 5(850), 6(900), 8(900), 9(1800), 18(800), 19(800), 28(700) - Taiwan LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(26 |
LTE |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - | - | - Fingerprint Sensor - Dual Front Speakers - Fast Charging |
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| OS | Android OS, v4.4 (KitKat) | Android OS, v5.0 (Lollipop) | Android OS, v5.1 (Lollipop) |
| Processor | Octa-core 2.0 GHz, MediatTek MT6595m True8Core | Quad-core Cortex-A53 & Quad-core Cortex-A53, Qualcomm MSM8939 Snapdragon 615 | Octa-core 1.3 GHz Cortex-A53, Mediatek MT6753 |
| GPU | PowerVR G600 | Adreno 405 | Mali-T720MP3 |
| RAM | 2 GB | 2/3 GB | 3 GB |
| Internal Memory | 32 GB | 16/32 GB | 16 GB |
| External Memory | No | microSD, up to 64 GB | microSD, up to 128 GB |
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| Type | IPS LCD capacitive touchscreen | IPS Capacitive Touchscreen, Corning Gorilla Glass 4, Oleophobic Coating | Capacitive Touchscreen, Corning Gorilla Glass 3 |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.0 inches | 5.5 inches | 5.5 inches |
| Resolution | 1080 x 1920 pixels (441 ppi) | 1080 x 1920 pixels (401 ppi) | 1080 x 1920 pixels (401 ppi) |
| Screen-to-Body Ratio | 71.52% | 68.86% | 70.80% |
| 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, 4160 x 3120 pixels | 13 MP, 4128 x 3096 pixels | 13 MP, 4208 x 3120 pixels |
| Flash | LED flash | dual-LED (Dual Tone) | Dual-LED (Dual Tone) |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Laser Autofocus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Phase Detection Auto focus, 1/3.06' Sensor Size, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 5 MP [Similar] | 13 MP, 1080p, laser autofocus, dual-LED [Similar] | 5 MP, 1080p [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 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Bluetooth | v4.0, A2DP | v4.0, A2DP, EDR | v4.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n/ac, dual band, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, hotspot |
| USB | microUSB v2.0 | microUSB v2.0 (MHL TV-out), USB Host | microUSB v2.0, USB Host, Fast Charge 2.0 |
| GPS | Yes, with A-GPS, 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 | 16/32 GB, 2/3 GB RAM | 16 GB, 3 GB RAM |
| Expandable Storage | No | microSD, up to 64 GB | microSD, up to 128 GB |
| 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 | Li-Po Battery | Non-removable Li-Po Battery |
| Capacity | 2300 mAh | 3000 mAh | 3300 mAh |
| Stand by | Up to 228 h (2G) Up to 216 h (3G) |
- | Up to 265 h |
| Talk Time | Up to 17 h (2G) Up to 19 h (3G) |
- | Up to 22 h |
