Phone Comparison - Lenovo Vibe Z K910 vs Asus Zenfone 6 vs Lenovo A3900
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| Manufacturer | Lenovo | Asus | Lenovo |
| Announced | November 2013 | January 2014 | April 2015 |
| Status | Available - January 2014 | Available - June 2014 | Available - April 2015 |
| Price | - | - | Rs. 5,450 ($80.00) [Similarly Priced] |
| Colors | Black | Black, White, Red, Gold | Black and Pearl White, Silver |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
7.9 mm thickness (0.31 in thickness) |
166.9 x 84.3 x 5.5-9.9 mm (6.57 x 3.32 x 0.22-0.39 in) |
142.8 x 71.8 x 8.95 mm (5.62 x 2.83 x 0.35 in) |
| Weight | 147 g (5.19 oz) | 196 g (6.91 oz) | 157 g (5.54 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE | - | LTE 2300 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.3 (Jelly Bean) | Android OS, v4.3 (Jelly Bean), upgradable to v4.4.2 (KitKat) | Android OS, v4.4.4 (KitKat) |
| Processor | Quad-core 2.2 GHz Krait 400, Qualcomm Snapdragon 800 | Dual-core 2 GHz, Intel Atom Z2580 | Octa-core 1.2 GHz Cortex-A53, Mediatek MT6752 |
| GPU | Adreno 330 | PowerVR SGX544MP2 | Mali-T760 |
| RAM | 2 GB | 1/2 GB | 512 MB |
| Internal Memory | 16 GB ROM | 8/16/32 GB | 4 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 64 GB | microSD, up to 32 GB |
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| Type | IPS LCD Capacitive Touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3 | TFT 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) | 720 x 1280 pixels (245 ppi) | 480 x 854 pixels (196 ppi) |
| Screen-to-Body Ratio | - | 70.40% | 67.14% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | - | No | Yes |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels | 5 MP, 2592 х 1944 pixels |
| Flash | Dual-LED flash | LED flash | LED Flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection | - |
| Video | Yes, 1080p@30fps | Yes | Yes |
| Front Camera | Yes, 5 MP [Similar] | Yes, 2 MP [Similar] | 2 MP [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, 42.2 Mbps; HSUPA, 5.76 Mbps | HSPA, LTE Cat4 150/50 Mbps |
| Bluetooth | Yes, v4.0 with A2DP | Yes, v4.0 with A2DP, EDR | v4.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual band, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, hotspot |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes, with A-GPS |
| Browser | HTML5 | HTML | HTML5 |
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| Internal | 16 GB ROM, 2 GB RAM | 8/16/32 GB, 1/2 GB RAM | 4 GB, 512 MB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 64 GB | microSD, up to 32 GB |
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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 |
| Capacity | - | 3300 mAh | 2300 mAh |
| Stand by | - | Up to 398 h (3G) | - |
| Talk Time | - | Up to 28 h (3G) | - |
