Phone Comparison - Asus Zenfone 6 vs Karbonn Titanium Octane Plus vs Xiaomi Mi 4
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| Manufacturer | Asus | Karbonn | Xiaomi |
| Announced | January 2014 | March 2014 | July 2014 |
| Status | Available - June 2014 | Available - April 2014 | Available - Q3 2014 |
| Colors | Black, White, Red, Gold | Black, White | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
166.9 x 84.3 x 5.5-9.9 mm (6.57 x 3.32 x 0.22-0.39 in) |
147.3 x 72.6 x 7.6 mm (5.8 x 2.86 x 0.3 in) |
139.2 x 68.5 x 8.9 mm (5.48 x 2.7 x 0.35 in) |
| Weight | 196 g (6.91 oz) | - | 149 g (5.26 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | - | - | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.3 (Jelly Bean), upgradable to v4.4.2 (KitKat) | Android OS, v4.4 (KitKat) | Android OS, v4.4.3 (KitKat) |
| Processor | Dual-core 2 GHz, Intel Atom Z2580 | Octa-core 1.7 GHz, Mediatek MT6592 | Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 |
| GPU | PowerVR SGX544MP2 | Mali-450MP4 | Adreno 330 |
| RAM | 1/2 GB | 2 GB | 3 GB |
| Internal Memory | 8/16/32 GB | 16 GB ROM | 16/64 GB |
| External Memory | microSD, up to 64 GB | microSD, up to 32 GB | No |
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| Type | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3 | 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 | 70.40% | 64.32% | 72.14% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | FM Radio with Recording | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4128 x 3096 pixels | 16 MP, 4616 x 3464 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | LED flash | Dual-LED Flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection, 360 degree Panorama, HDR, Image Stabilization | Auto focus, 1/3' Sensor Size, 1.12µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR |
| Video | Yes | Yes, 1080p@30fps | 2160p, 1080p@30fps, HDR |
| Front Camera | Yes, 2 MP [Similar] | Yes, 5 MP, 1080p [Similar] | 8 MP, 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps | HSDPA, 42.2 Mbps, HSUPA, 11.5 Mbps | DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE |
| Bluetooth | Yes, v4.0 with A2DP, EDR | Yes, v4.0 | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, 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 | Yes, microUSB v2.0 | microUSB v2.0 (MHL), USB On-the-go |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes, with A-GPS, GLONASS |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 8/16/32 GB, 1/2 GB RAM | 16 GB ROM, 2 GB RAM | 16/64 GB, 3 GB RAM |
| Expandable Storage | microSD, up to 64 GB | microSD, up to 32 GB | No |
| 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 | Li-Po battery | Non-removable Li-Ion Battery |
| Capacity | 3300 mAh | 2000 mAh | 3080 mAh |
| Stand by | Up to 398 h (3G) | - | - |
| Talk Time | Up to 28 h (3G) | - | - |
