Phone Comparison - Acer Liquid E2 Duo vs Lenovo S660 vs Lenovo A536
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| Manufacturer | Acer | Lenovo | Lenovo |
| Announced | April 2013 | February 2014 | September 2014 |
| Status | Coming Soon - May 2013 | Coming Soon - June 2014 | Available - September 2014 |
| Colors | Black, White | Metallic Black | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
131 x 68 x 9.9 mm (5.16 x 2.68 x 0.39 in) |
137 x 68.8 x 9.95 mm (5.39 x 2.71 x 0.39 in ) |
139.6 x 72 x 9.95 mm (5.5 x 2.83 x 0.39 in) |
| Weight | 140 g (4.94 oz) | 151 g (5.33 oz) | 149 g (5.26 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 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA | HSDPA 900 / 2100 HSDPA 850 / 1900 |
HSDPA 900 / 2100 |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.2.1 (Jelly Bean) | Android OS, v4.2.2 (Jelly Bean) | Android OS, v4.4.2 (KitKat) |
| Processor | Quad-core 1.2 GHz Cortex-A7, MTK 6589 | Quad-core 1.3 GHz Cortex-A7, Mediatek MT6582M | Quad-core 1.3 GHz, Mediatek MT6582M |
| GPU | PowerVR SGX 544MP | Mali-400MP2 | Mali-400MP2 |
| RAM | 1 GB | 1 GB | 1 GB |
| Internal Memory | 4 GB | 8 GB ROM | 8 GB ROM |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen | TFT Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.5 inches | 4.7 inches | 5.0 inches |
| Resolution | 540 x 960 pixels (245 ppi) | 540 x 960 pixels (234 ppi) | 480 x 854 pixels (196 ppi) |
| Screen-to-Body Ratio | 62.55% | 64.80% | 68.49% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM Radio with Recording | FM Radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264 x 2448 pixels | 8 MP, 3264x2448 pixels | 5 MP, 2592 x 1944 pixels |
| Flash | LED flash | LED flash | LED Flash |
| Features | Auto focus, Geo-tagging | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR | Geo-tagging, Touch Focus, Face And Smile Detection, Panorama, HDR |
| Video | Yes, 1080p@30fps | Yes, 1080p@30fps | Yes |
| Front Camera | Yes, 2 MP [Similar] | Yes, VGA [Similar] | Yes, 2 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA+ | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes, v3.0 with A2DP, EDR | Yes, v3.0 with A2DP, HS | v4.0 |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual band, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, 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 |
| Browser | HTML | HTML5 | HTML |
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| Internal | 4 GB, 1 GB RAM | 8 GB ROM, 1 GB RAM | 8 GB ROM, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 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 | Li-Ion Battery | Non-removable Li-Po Battery | Li-Po Battery |
| Capacity | 2000 mAh | 3000 mAh | 2000 mAh |
| Stand by | Up to 450 h | - | Up to 300 h |
| Talk Time | Up to 9 h | Up to 10 h (2G) Up to 8 h (3G) |
Up to 15 h 30 min |
