Phone Comparison - Apple iPhone 3G vs Lenovo S820 vs Asus PadFone Infinity 2
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| Manufacturer | Apple | Lenovo | Asus |
| Announced | June 2008 | May 2013 | September 2013 |
| Status | Discontinued | Available - May 2013 | Available - October 2013 |
| Colors | Black(8/16 GB), White (16 GB) | Flamingo red | Titanium Black, Platinum White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
115.5 x 62.1 x 12.3 mm (4.55 x 2.44 x 0.48 in) |
139.5 x 69.7 x 9 mm (5.49 x 2.74 x 0.35 in) |
143.5 x 72.8 x 8.9 mm (5.65 x 2.87 x 0.35 in) |
| Weight | 133 g (4.69 oz) | 143 g (5.04 oz) | 145 g (5.11 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 1900 / 2100 | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | - | - | LTE 800 / 1800 / 2600 |
| Messaging | SMS, MMS | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | iPhone OS, upgradable to iOS 4 | Android OS, v4.2 (Jelly Bean) | Android OS, v4.2.2 (Jelly Bean) |
| Processor | 412 MHz ARM 11 | Quad-core 1.2 GHz, MTK 6589W | Quad-core 2.2 GHz Krait 400, Qualcomm Snapdragon 800 |
| GPU | PowerVR MBX | PowerVR SGX544 | Adreno 330 |
| RAM | 128 MB | 1 GB | 2 GB |
| Internal Memory | 8 GB/ 16 GB storage | 4 GB | 16/32 GB |
| External Memory | No | microSD, up to 32 GB | microSD, up to 64 GB |
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| Type | TFT capacitive touchscreen | IPS LCD capacitive touchscreen | Super IPS+ LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.5 inches | 4.7 inches | 5.0 inches |
| Resolution | 320 x 480 pixels (165 ppi) | 720 x 1280 pixels (312 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 50.75% | 62.82% | 65.85% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | FM radio; built-in antenna | FM radio |
| Games | Yes | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 2 MP, 1600x1200 pixels | 12 MP, 4000 x 3000 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | No | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection | |
| Video | No | Yes | Yes, 1080p@30fps |
| Front Camera | No [Similar] | Yes, 2 MP [Similar] | Yes, 2 MP, 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Class 10 (4+1/3+2 slots), 32 - 48 kbps |
| Edge | Yes | Yes | Class 10, 236.8 kbps |
| 3G | HSDPA | HSDPA, HSUPA | DC-HSPA+, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL |
| Bluetooth | Yes, v2.0 with A2DP, headset support only | Yes, v3.0 with A2DP | Yes, v4.0 with A2DP |
| Wi-Fi | Wi-Fi 802.11b/g | Wi-Fi 802.11 a/b/g/n, dual band | Wi-Fi 802.11 a/ac/b/g/n, Wi-Fi Direct, dual-band, Wi-Fi hotspot |
| USB | Yes, v2.0 | Yes, microUSB v2.0 | Yes, microUSB v2.0 (MHL), USB Host |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes, with A-GPS support and GLONASS |
| Browser | HTML (Safari) | HTML | HTML5 |
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| Internal | 8 GB/ 16 GB storage, 128 MB RAM | 4 GB, 1 GB RAM | 16/32 GB, 2 GB RAM |
| Expandable Storage | No | microSD, up to 32 GB | microSD, up to 64 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 | Standard battery, Li-Ion | Li-Po Battery | Non-removable Li-Po Battery |
| Capacity | 2000 mAh | 2400 mAh | |
| Stand by | Up to 300 h | Up to 140 h (2G) Up to 140 h (3G) |
Up to 410 h (3G) |
| Talk Time | Up to 10 h | Up to 22 h (2G) Up to 10 h (3G) |
Up to 19 h (3G) |
