| Name | Samsung Galaxy S II
 | Samsung Galaxy Ace Duos
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| Processor: | 1.2 GHz dual core ARM Cortex-A9 processor | 832MHz Processor |
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| GPU: | | N/A |
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| Operating System: | Android | Android |
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| Operating System Version: | Android 4.0 (Icecream Sandwich) | Android v2.3 OS |
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| Sensors: | | Gyro sensor, G-Sensor |
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| Manufacturer: | Samsung Electronics | Samsung |
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| Series Name: | Samsung Galaxy | Samsung Galaxy |
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| Dimensions: | 4.93 in x 2.60 in x 0.334 in | 112.74 x 61.50 x 11.50mm |
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| Weight: | 130 g (4.6 oz) | 122g |
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| Camera Type: | Dual Camera | Back Camera |
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| Front Camera: | 2 Mpx | N/A |
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| Back Camera: | 8 Mpx Back-illuminated sensor with auto focus, 1080p 30 fps full HD video recording, full HD reproduction, and stills. Single LED flash. | CMOS, 5.0MP |
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| RAM: | 1 GB RAM | 384 MB |
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| External Memory: | microSD (up to 64 GB SDXC) | 3GB |
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| Internal Storage: | 16 GB flash memory | Up to 32 GB expandable |
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| Screen Size: | 4.3 in | 8.89cm |
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| Display: | 4.3 in (110 mm) AMOLED with 480x800 pixels (218 ppi) and RGB-Matrix (GT-I9100 and GT-I9100G) | 320 x 480 (HVGA) |
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| Ports: | USB 2.0, HDMI | USB 2.0 |
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| Battery Type: | Li-ion 1650 mAh | 1,300mAh - Up to 1,010 minutes(2G)/380 minutes(3G) |
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| Audio: | | AMR-NB, AMR-WB, IMY, MIDI, MP3, OGG, WAV |
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| Video: | | MPEG4, H.263, H.264, 3GP |
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| Accessories: | | Charger, USB cable, Warranty card, Headphones |
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| Bluetooth: | Bluetooth 3.0 | PBAP, PBA, A2DP, GAP, HSP, HID, PAN, SDAP, MAP AVRCP1.3 HFP1.5 |
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| Network: | | EDGE/GPRS (850/900/1,800/1,900MHz) |
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| Connectivity: | 3.5 mm TRRS; Wi-Fi (802.11a,b,g,n); Wi-Fi Direct; Bluetooth 3.0; micro USB 2.0; Near field communication (NFC); DLNA; MHL; HDMI; USB Host (OTG) 2.0 | Wi-Fi - 802.11b/g/n 2.4GHz |
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| Available Colors: | | White, Black |
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| Read Samsung Galaxy S II reviews. | Read Samsung Galaxy Ace Duos reviews. |
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| Compare Samsung Galaxy S II:
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