Phone Comparison - Lenovo Vibe Z K910 vs Lenovo Vibe Z2 Pro vs HTC Butterfly 2
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| Manufacturer | Lenovo | Lenovo | HTC |
| Announced | November 2013 | August 2014 | August 2014 |
| Status | Available - January 2014 | Available - September 2014 | Available - August 2014 |
| Colors | Black | Black, Gold, White | Red, White, Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
7.9 mm thickness (0.31 in thickness) |
156 x 81.3 x 7.7 mm (6.14 x 3.2 x 0.3 in) |
146.4 x 70.6 x 9.4 mm (5.76 x 2.78 x 0.37 in) |
| Weight | 147 g (5.19 oz) | 179 g (6.31 oz) | 160 g (5.64 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 2100 | HSDPA 850 / 900 / 1700 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE | LTE 800 / 850 / 900 / 1800 / 2100 / 2600 | LTE |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail |
| Build Features | - | - | - IPX5/IPX7 certified - dust proof and water resistant up to 1 meter and 30 minutes |
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| OS | Android OS, v4.3 (Jelly Bean) | Android OS, v4.4.2 (KitKat) | Android OS, v4.4.2 (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 2.5 GHz, Qualcomm Snapdragon 801 |
| GPU | Adreno 330 | Adreno 330 | Adreno 330 |
| RAM | 2 GB | 3 GB | 2 GB |
| Internal Memory | 16 GB ROM | 32 GB | 16/32 GB |
| External Memory | microSD, up to 32 GB | No | microSD, up to 128 GB |
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| Type | IPS LCD Capacitive Touchscreen | IPS LCD capacitive touchscreen | Super LCD3 Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.5 inches | 6.0 inches | 5.0 inches |
| Resolution | 1080 x 1920 pixels (401 ppi) | 1440 x 2560 pixels (490 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | - | 78.10% | 66.55% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | - | - | Stereo FM radio with RDS |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4128 x 3096 pixels | 16 MP, 3456 x 4608 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | Dual-LED flash | optical image stabil | Dual-LED (dual tone) |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection | Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, BSI Sensor |
| Video | Yes, 1080p@30fps | 2160p@30fps, 1080p@30fps, optical stabilization | 1080p@30fps |
| Front Camera | Yes, 5 MP [Similar] | Yes [Similar] | 5 MP, 1080p@30fps, HDR, BSI Sensor [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 | HSDPA, 42 Mbps; HSUPA, 5.76 Mbps; 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, dual band, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | microUSB v2.0 | microUSB v2.0 (MHL), USB On-the-go, USB Host |
| 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 | 32 GB, 3 GB RAM | 16/32 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32 GB | No | microSD, up to 128 GB |
| 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-Po Battery |
| Capacity | - | 4000 mAh | 2700 mAh |
| Stand by | - | - | Up to 643 h |
| Talk Time | - | - | Up to 23 h 54 min |
