Phone Comparison - Lenovo S939 vs Lenovo S660 vs Lenovo Vibe X2
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| Manufacturer | Lenovo | Lenovo | Lenovo |
| Announced | February 2014 | February 2014 | September 2014 |
| Status | Available - February 2014 | Coming Soon - June 2014 | Available - October 2014 |
| Colors | Black, White | Metallic Black | White, Gold, Red, Dark Grey |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
170 x 86.5 x 8.65 mm (6.69 x 3.41 x 0.34 in) |
137 x 68.8 x 9.95 mm (5.39 x 2.71 x 0.39 in ) |
140.2 x 68.6 x 7.3 mm (5.52 x 2.7 x 0.29 in) |
| Weight | 180 g (6.35 oz) | 151 g (5.33 oz) | 120 g (4.23 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 1800 / 1900 - SIM 1 & SIM 2 |
GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 2100 | HSDPA 900 / 2100 HSDPA 850 / 1900 |
HSDPA 850 / 900 / 1700 / 1900 / 2100 |
| 4G Network | - | - | LTE 800 / 1800 / 2100 / 2600 |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.2.2 (Jelly Bean) | Android OS, v4.2.2 (Jelly Bean) | Android OS, v4.4 (KitKat) |
| Processor | Octa-core 1.7 GHz, Mediatek MT6592 | Quad-core 1.3 GHz Cortex-A7, Mediatek MT6582M | Octa-core 2.0 GHz, MediatTek MT6595m True8Core |
| GPU | Mali-450MP4 | Mali-400MP2 | PowerVR G600 |
| RAM | 1 GB | 1 GB | 2 GB |
| Internal Memory | 8 GB ROM | 8 GB ROM | 32 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | No |
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| Type | IPS LCD Capacitive Touchscreen, OGS | IPS LCD Capacitive Touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 6.0 inches | 4.7 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (245 ppi) | 540 x 960 pixels (234 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 67.36% | 64.80% | 71.52% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM Radio with Recording | FM Radio with Recording | - |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels | 8 MP, 3264x2448 pixels | 13 MP, 4160 x 3120 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, 360 degree Panorama, HDR, Image Stabilization | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR |
| Video | Yes, 1080p@30fps | Yes, 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, 1.6 MP [Similar] | Yes, VGA [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 42.2 Mbps, HSUPA, 11.5 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, 42 Mbps; HSUPA; LTE, Cat4, 50 Mbps UL, 150 Mbps DL |
| Bluetooth | Yes, v4.0 | Yes, v3.0 with A2DP, HS | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n/ac, dual band, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0, USB On-the-go | microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB ROM, 1 GB RAM | 8 GB ROM, 1 GB RAM | 32 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32 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 | Li-Ion Battery | Non-removable Li-Po Battery | Non-removable Li-Po Battery |
| Capacity | 3000 mAh | 3000 mAh | 2300 mAh |
| Stand by | - | - | Up to 228 h (2G) Up to 216 h (3G) |
| Talk Time | - | Up to 10 h (2G) Up to 8 h (3G) |
Up to 17 h (2G) Up to 19 h (3G) |
