Phone Comparison - Samsung Galaxy Ace 2 vs LG Optimus L9 vs Sony Xperia M Dual
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| Manufacturer | Samsung | LG | Sony |
| Announced | February 2012 | August 2012 | June 2013 |
| Status | Available - May 2012 | Available - November 2012 | Available - September 2013 |
| Colors | Black | White | Black, White, Purple, Yellow |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
118.3 x 62.2 x 10.5 mm (4.66 x 2.45 x 0.41 in) |
131.9 x 68.2 x 9.1 mm (5.19 x 2.69 x 0.36 in) |
124 x 62 x 9.3 mm (4.88 x 2.44 x 0.37 in) |
| Weight | 122 g (4.3 oz) | 125 g (4.41 oz) | 115 g (4.06 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Both Versions) |
| 3G Network | HSDPA 900 / 2100 | HSDPA 900 / 1900 / 2100 | HSDPA 900 / 2100 - C2005 HSDPA 850 / 1700 / 1900 / 2100 - C2004 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v2.3 | Android OS, v4.0.4 (Ice Cream Sandwich) | Android OS, v4.1 (Jelly Bean) |
| Processor | Dual-core 800 MHz, NovaThor U8500 | Dual-core 1 GHz Cortex-A9, TI OMAP 4430 | Dual-core 1 GHz Krait, Qualcomm MSM8227 |
| GPU | Mali-400MP | PowerVR SGX540 | Adreno 305 |
| RAM | 768 MB | 1 GB | 1 GB |
| Internal Memory | 4 GB storage | 4 GB | 4 GB |
| External Memory | microSD, up to 32GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | PLS TFT capacitive touchscreen | IPS LCD, capacitive touchscreen | TFT capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.8 inches | 4.7 inches | 4.0 inches |
| Resolution | 480 x 800 pixels (246 ppi) | 540 x 960 pixels (234 ppi) | 480 x 854 pixels (245 ppi) |
| Screen-to-Body Ratio | 55.64% | 67.90% | 57.31% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | Stereo FM radio with RDS | Stereo FM radio with RDS |
| Games | Yes | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592x1944 pixels | 5 MP, 2592 x 1944 pixels | 5 MP, 2592х1944 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Face And Smile Detection | Auto focus, Geo-tagging | Auto focus, Geo-tagging, Touch Focus, Image Stabilization, HDR, Panorama |
| Video | Yes, 720p@30fps | Yes | Yes, 720p@30fps |
| Front Camera | Yes, VGA [Similar] | Yes, VGA [Similar] | Yes, VGA [Similar] |
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| GPRS | Yes | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Up to 86 kbps |
| Edge | Yes | Class 12 | Up to 237 kbps |
| 3G | HSDPA, 14.4 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes, v3.0 with A2DP | Yes, with A2DP | Yes, v4.0 with A2DP, ANT+ |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot, DLNA | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot |
| USB | Yes, v2.0 microUSB | 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 |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 4 GB storage, 768 MB RAM | 4 GB, 1 GB RAM | 4 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 32GB | microSD, up to 32 GB | microSD, up to 32 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 | Standard battery, Li-Ion | Standard battery, Li-Ion | Li-Ion Battery |
| Capacity | 1500 mAh | 2150 mAh | 1750 mAh |
| Stand by | Up to 670 h (2G) Up to 640 h (3G) |
- | Up to 498 h (2G) Up to 454 h (3G) |
| Talk Time | Up to 16 h 20 min (2G) Up to 7 h 30 min (3G) |
- | Up to 10 h 16 min (2G) Up to 9 h (3G) |
