Phone Comparison - LG Optimus 4X HD vs Samsung I9300 Galaxy S III (S3) vs Panasonic P51
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| Manufacturer | LG | Samsung | Panasonic |
| Announced | February 2012 | May 2012 | May 2013 |
| Status | Available - June 2012 | Available - May 2012 | Available - May 2013 |
| Colors | Black | Blue, White | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
132.4 x 68.1 x 8.9mm (5.21 x 2.68 x 0.35in) |
136.6 x 70.6 x 8.6 mm (5.38 x 2.78 x 0.34 in) |
144 x 75 x 8.5 mm (5.67 x 2.95 x 0.33 in) |
| Weight | 133 g (4.69 oz) | 133 g (4.69 oz) | 135 g (4.76 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 900 / 2100 |
| 4G Network | - | LTE (regional) | - |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.0 (Ice Cream Sandwich) | Android OS, v4.0.4 (Ice Cream Sandwich) | Android OS, v4.2 (Jelly Bean) |
| Processor | Quad-core 1.5 GHz Cortex-A9, Nvidia Tegra 3 | Quad-core 1.4 GHz Cortex-A9, Exynos 4212 Quad | Quad-core 1.2 GHz Cortex-A7, MTK MT6589 |
| GPU | ULP GeForce | Mali-400MP | PowerVR SGX544 |
| RAM | 1 GB | 1 GB | 1 GB |
| Internal Memory | 16 GB storage | 16/32/64 GB storage | 4 GB storage |
| External Memory | Upto 16 GB | microSD, up to 64 GB | microSD, up to 32 GB |
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| Type | HD-IPS LCD capacitive touchscreen | Super AMOLED capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.7 inches | 4.8 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (312 ppi) | 720 x 1280 pixels (306 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 67.74% | 65.84% | 63.69% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Yes | Stereo FM radio with RDS | FM radio |
| Games | Yes | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels | 8 MP, 3264x2448 pixels | 8 MP, 3264 x 2448 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Face And Smile Detection, Touch Focus, Image Stabilization | Auto focus, Simultaneous HD Video And Image Recording, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization | Auto focus, Geo-tagging, Touch Focus, Face Detection |
| Video | Yes, 1080p@30fps | Yes, 1080p@30fps | Yes, 1080p |
| Front Camera | Yes, 1.3 MP [Similar] | Yes, 1.9 MP, 720p@30fps [Similar] | Yes, 1.3 MP, 720p [Similar] |
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| GPRS | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Yes |
| Edge | Class 12 | Class 12 | Yes |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, 21 Mbps; HSUPA, 11 Mbps |
| Bluetooth | Yes, with A2DP | Yes, v4.0 with A2DP, EDR | Yes, v4.0 with A2DP, EDR |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot |
| USB | Yes, microUSB (MHL) v2.0 | Yes, microUSB v2.0 (MHL), USB On-the-go | Yes, microUSB v2.0, USB On-the-go |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support and GLONASS | Yes, with A-GPS support |
| Browser | HTML5, Adobe Flash | HTML, Adobe Flash | HTML5 |
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| Internal | 16 GB storage, 1 GB RAM | 16/32/64 GB storage, 1 GB RAM | 4 GB storage, 1 GB RAM |
| Expandable Storage | Yes | microSD, up to 64 GB | microSD, up to 32 GB |
| USB OTG | - | Supported | 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 | Standard battery, Li-Ion | Li-Ion Battery |
| Capacity | 2150 mAh | 2100 mAh | 2500 mAh |
| Stand by | Up to 730 h (2G) Up to 686 h (3G) |
Up to 830Hr (2G)/up to 770Hr hours (3G) | - |
| Talk Time | Up to 9 h 20 min (2G) Up to 10 h 50 min (3G) |
Up to 1350Min (2G)/up to 700Min hours (3G) | - |
