Phone Comparison - Nokia Lumia 1020 vs Acer Liquid S2 vs Lenovo A390
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| Manufacturer | Nokia | Acer | Lenovo |
| Announced | July 2013 | August 2013 | April 2013 |
| Status | Available - July 2013 | Available - December 2013 | Available - April 2013 |
| Colors | Black, White, Yellow | Black, Red | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
130.4 x 71.4 x 10.4 mm (5.13 x 2.81 x 0.41 in) |
166 x 86 x 8.99 mm (6.54 x 3.39 x 0.35 in) |
125.6 x 64 x 10.1 mm (4.94 x 2.52 x 0.4 in) |
| Weight | 158 g (5.57 oz) | 231 g (8.15 oz) | 131 g (4.62 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 900 / 1800 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 900 / 2100 | HSDPA 2100 |
| 4G Network | LTE 800 / 900 / 1800 / 2100 / 2600 | LTE 800 / 1800 / 2600 | - |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM |
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| OS | Microsoft Windows Phone 8 | Android OS, v4.2.2 (Jelly Bean) | Android OS, v4.0.4 (Ice Cream Sandwich) |
| Processor | Dual-core 1.5 GHz Krait, Qualcomm MSM8960 Snapdragon | Quad-core 2.2 GHz Krait 400, Qualcomm MSM8974 Snapdragon 800 | Dual-core 1 GHz, MTK 6577 |
| GPU | Adreno 225 | Adreno 330 | PowerVR SGX531 |
| RAM | 2 GB | 2 GB | 512 MB |
| Internal Memory | 32 GB | 16 GB | 4 GB |
| External Memory | No | microSD, up to 128 GB | microSD, up to 32 GB |
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| Type | AMOLED capacitive touchscreen, PureMotion HD+ ClearBlack Display, Gorilla Glass 3 | IPS LCD capacitive touchscreen | Capacitive touchscreen |
| Colors | 16M colors | 16M colors | - |
| Size | 4.5 inches | 6.0 inches | 4.0 inches |
| Resolution | 768 x 1280 pixels (332 ppi) | 1080 x 1920 pixels (367 ppi) | 480 x 800 pixels (233 ppi) |
| Screen-to-Body Ratio | 61.80% | 69.58% | 56.77% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | Stereo FM radio with RDS | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 41 MP (38 MP effective, 7152 x 5368 pixels) | 13 MP, autofocus | 5 MP, 2592 х 1944 pixels |
| Flash | Xenon Flash | LED Ring Flash | No |
| Features | Carl Zeiss optics, Auto Focus, 1/1.2' Sensor Size, ND Filter, Optical Zoom, Geo-tagging, Face Detection, Optical Zoom, Panorama | Geo-tagging, 27 MP Panorama Photos | Geo-tagging |
| Video | Yes, 1080p@30fps | Yes, 4K@30fps, 1080p@60fps | Yes |
| Front Camera | Yes, 1.2 MP, 720p [Similar] | Yes, 2 MP, 1080p@30fps [Similar] | No [Similar] |
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| GPRS | Up to 107 kbps | Yes | Yes |
| Edge | Up to 236.8 kbps | Yes | Yes |
| 3G | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE-A, Cat4, 50 Mbps UL, 150 Mbps DL | HSDPA, HSUPA |
| Bluetooth | Yes, v3.0 with A2DP | Yes, v4.0 with A2DP | Yes |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, UPnP technology | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0, USB On-the-go | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support and GLONASS | Yes, with A-GPS support |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 32 GB, 2 GB RAM | 16 GB, 2 GB RAM | 4 GB, 512 MB RAM |
| Expandable Storage | No | microSD, up to 128 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 | Non-removable Li-Ion Battery, Wireless Charging Supported via Cover | Li-Po Battery | Li-Ion Battery |
| Capacity | 2000 mAh | 3300 mAh | 1500 mAh |
| Stand by | Up to 384 h | - | Up to 220 h (2G) Up to 180 h (3G) |
| Talk Time | Up to 19 h 6 min (2G) Up to 13 h 18 min (3G) |
- | Up to 14 h (2G) Up to 9 h (3G) |
