Phone Comparison - Acer Liquid S2 vs Lenovo S820 vs Asus PadFone E
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| Manufacturer | Acer | Lenovo | Asus |
| Announced | August 2013 | May 2013 | January 2014 |
| Status | Available - December 2013 | Available - May 2013 | Available - March 2014 |
| Colors | Black, Red | Flamingo red | Johnnie Walker Black, Pearl White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
166 x 86 x 8.99 mm (6.54 x 3.39 x 0.35 in) |
139.5 x 69.7 x 9 mm (5.49 x 2.74 x 0.35 in) |
136.9 x 69.7 x 9.08 mm (5.39 x 2.74 x 0.36 in) |
| Weight | 231 g (8.15 oz) | 143 g (5.04 oz) | 126 g (4.44 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 900 / 2100 | HSDPA 900 / 2100 | HSDPA |
| 4G Network | LTE 800 / 1800 / 2600 | - | - |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.2.2 (Jelly Bean) | Android OS, v4.2 (Jelly Bean) | Android OS, v4.3 (Jelly Bean) |
| Processor | Quad-core 2.2 GHz Krait 400, Qualcomm MSM8974 Snapdragon 800 | Quad-core 1.2 GHz, MTK 6589W | Quad-core 1.4 GHz, Qualcomm Snapdragon MSM8226 |
| GPU | Adreno 330 | PowerVR SGX544 | Adreno 305 |
| RAM | 2 GB | 1 GB | 1 GB |
| Internal Memory | 16 GB | 4 GB | 16 GB |
| External Memory | microSD, up to 128 GB | microSD, up to 32 GB | microSD, up to 64 GB |
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| Type | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen | Super IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 6.0 inches | 4.7 inches | 4.7 inches |
| Resolution | 1080 x 1920 pixels (367 ppi) | 720 x 1280 pixels (312 ppi) | 720 x 1280 pixels (312 ppi) |
| Screen-to-Body Ratio | 69.58% | 62.82% | 64.01% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | FM radio; built-in antenna | - |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, autofocus | 12 MP, 4000 x 3000 pixels | 13 MP, 4163 x 3122 pixels |
| Flash | LED Ring Flash | LED flash | LED flash |
| Features | Geo-tagging, 27 MP Panorama Photos | Auto focus, Geo-tagging, Touch Focus, Face Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection |
| Video | Yes, 4K@30fps, 1080p@60fps | Yes | Yes |
| Front Camera | Yes, 2 MP, 1080p@30fps [Similar] | Yes, 2 MP [Similar] | Yes, 1.2 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE-A, Cat4, 50 Mbps UL, 150 Mbps DL | HSDPA, HSUPA | HSDPA, HSUPA |
| Bluetooth | Yes, v4.0 with A2DP | Yes, v3.0 with A2DP | Yes, v4.0 with A2DP |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual band | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS support | Yes, with A-GPS support and GLONASS |
| Browser | HTML5 | HTML | HTML5 |
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| Internal | 16 GB, 2 GB RAM | 4 GB, 1 GB RAM | 16 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 32 GB | microSD, up to 64 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 | Li-Po Battery | Li-Po Battery | Non-removable Li-Po Battery |
| Capacity | 3300 mAh | 2000 mAh | 1820 mAh |
| Stand by | - | Up to 140 h (2G) Up to 140 h (3G) |
Up to 270 h on (2G) Up to 330 h (3G) |
| Talk Time | - | Up to 22 h (2G) Up to 10 h (3G) |
Up to 27 h (2G) Up to 15 h (3G) |
