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Samsung Galaxy S Duos vs Samsung Galaxy S II

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Samsung Galaxy S Duos Remove phone

Posted: 12 Jul 2012
Market Status: Released
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Samsung Galaxy S II Remove phone

Posted: 13 Feb 2011
Market Status: Released

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Design
Device typeSmart phoneSmart phone 
OSAndroid (4.0.4)Android (4.1.2, 4.0.4, 4.0, 2.3) 
Form factorCandybarCandybar 
Dimensions4.78 x 2.48 x 0.41 inches (121.5 x 63.1 x 10.5 mm)4.93 x 2.60 x 0.33 inches (125.3 x 66.1 x 8.49 mm) 
Weight4.23 oz (120 g)
the average is 4.9 oz (139 g)
4.09 oz (116 g)
the average is 4.9 oz (139 g)
 
Side KeysLeft: Volume control; Right: Lock/Unlock key  
ColorsWhiteBlack, White 
Display
Physical size4.0 inches4.3 inches 
Resolution480 x 800 pixels480 x 800 pixels 
Pixel density

Pixel density - The pixel density of a display represents the number of pixels over an area of one inch. It’s measured in “pixels per inch”, or ppi. The higher the number, the more detailed and good-looking the display is.

233 ppi218 ppi 
Technology

Technology - There are two main screen technologies currently used in phones and tablets: LCD and AMOLED. The former usually features a light source and liquid crystals, while the latter is based on organic light-emitting diodes. Newer LCD variations like IPS-LCD and Super-LCD allow for very accurate color reproduction and very wide viewing angles, where no significant image quality loss is observed. Current AMOLED screens differ in such a way that they can exhibit much more saturated colors (sometimes too much) and incredibly high contrast levels, which is due to black color being completely black in AMOLED displays.

TFTSuper AMOLED Plus 
Colors16 777 21616 777 216 
TouchscreenCapacitive, Multi-touchCapacitive, Multi-touch 
FeaturesProximity sensorLight sensor, Proximity sensor, Scratch-resistant glass (Corning Gorilla Glass) 
Camera
Camera5 megapixels8 megapixels 
FlashLEDLED 
Aperture size

Aperture size - The aperture of a camera is the opening through which light travels before it reaches the camera sensor. The smaller the number is, the bigger this opening is, allowing for more light to pass.

 F2.6 
Camera sensor size 1/3.2" 
FeaturesAutofocus, Smile detection, ISO control, White balance presets, Digital zoom, Geo tagging, Panorama, EffectsBack-illuminated sensor (BSI), Autofocus, Smile detection, Digital zoom, Geo tagging, Panorama 
Camcorder640x480 (VGA)1920x1080 (1080p HD) (30 fps), 1280x720 (720p HD) 
FeaturesVideo callingVideo light, Video calling 
Front-facing camera0.3 megapixels VGA2 megapixels 
Hardware
System chip

System chip - Most modern handsets use an advanced chip that includes many of the device’s hardware modules like the processor, Wi-Fi, Bluetooth and sometimes even the wireless radio. This field shows what particular system chip (or System-on-a-Chip) is used in the phone.

Qualcomm Snapdragon S1 MSM7227ASamsung Exynos 4210 
Processor

Processor - The processor is the main computing component of a phone and is a major factor when it comes to the overall speed of the device. Some more powerful smartphones use dual-core and quad-core processors designed to deliver greater performance.

Single core, 1000 MHz, ARM Cortex-A5Dual core, 1200 MHz, ARM Cortex-A9 
Graphics processorAdreno 200 (enhanced)ARM Mali-400 
System memory

System memory - System memory, or RAM memory is the type of memory that the device uses to temporarily store data from the OS or currently-running apps. The more RAM available to the device, the better the performance will be when multiple or heavier programs are running.

768 MB RAM1024 MB RAM / DDR2 
Built-in storage4 GB32 GB 
Storage expansionmicroSD, microSDHC up to 32 GBmicroSD, microSDHC up to 32 GB 
Battery
Talk time12.83 hours
the average is 12 h (703 min)
18.30 hours
the average is 12 h (703 min)
 
Stand-by time23.8 days (570 hours)
the average is 20 days (491 h)
29.6 days (710 hours)
the average is 20 days (491 h)
 
Talk time (3G)8.66 hours
the average is 15 h (902 min)
9.00 hours
the average is 15 h (902 min)
 
Stand-by time (3G)19.6 days (470 hours)
the average is 30 days (710 h)
25.8 days (620 hours)
the average is 30 days (710 h)
 
Capacity1500 mAh1650 mAh 
TypeLi - IonLi - Ion 
specifications continue after the ad
Multimedia
Music player   
Filter byAlbum, Artist, PlaylistsAlbum, Artist, Playlists 
FeaturesAlbum art cover, Background playbackAlbum art cover, Background playback 
Supported formatsMP3, AAC, AAC+, eAAC+, WMA, WAV, AMR, OGG, MIDIMP3, AAC, AAC+, eAAC+ 
Video playback   
Supported formatsMPEG4, H.263, H.264MPEG4, H.263, H.264, DivX 
RadioFM, Stereo, RDSFM, Stereo, RDS 
SpeakersEarpiece, Loudspeaker  
YouTube playerYesYes 
Internet browsing
Browser   
supportsHTML, HTML5, FlashHTML, Flash 
Built-in online services supportYouTube (upload), Picasa/Google+Facebook, Picasa/Google+, Twitter 
Technology
GSM850, 900, 1800, 1900 MHz850, 900, 1800, 1900 MHz 
UMTS900, 2100 MHz850, 900, 1900, 2100 MHz 
DataHSDPA 7.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS, EDGE, GPRSHSDPA+ (4G) 21.1 Mbit/s, HSPA (unspecified), HSUPA 5.76 Mbit/s, UMTS, EDGE 
Multiple SIM cards2 slots  
Global RoamingYesYes 
Positioning

Positioning - This field shows the positioning systems supported by the device. There are three main types: GPS, A-GPS and GLONASS. GPS - This is one of the most widespread global positioning technologies, developed and maintained by the U.S. government. It uses satellites in order to detect your location. Works best in clear weather. A-GPS - A-GPS stands for Assisted GPS and is the industry standard for positioning and navigation. “Assisted” means that it can use local wireless networks, in addition to satellites, for quicker and more precise localization. GLONASS - GLONASS is a global positioning system, developed by the Russian Federation. It’s very similar to GPS, but isn’t so popular in cell phones.

A-GPSA-GPS 
NavigationYesYes 
Phone features
PhonebookUnlimited entries, Caller groups, Multiple numbers per contact, Search by both first and last name, Picture ID, Ring IDUnlimited entries, Caller groups, Multiple numbers per contact, Search by both first and last name, Picture ID, Ring ID 
OrganizerCalendar, Alarm, Document viewer (Office, PDF), CalculatorCalendar, Alarm, Document viewer, Calculator, World clock, Stopwatch, Countdown timer, Memo 
MessagingSMS, MMS, Threaded view, Predictive text inputSMS, MMS, Threaded view, Predictive text input 
E-mailIMAP, POP3, SMTP, Microsoft ExchangeIMAP, POP3, SMTP, Microsoft Exchange 
Instant MessagingHangouts / Google Talk, ChatONHangouts / Google Talk 
Games Yes 
Connectivity
Bluetooth3.13.0 
ProfilesAdvanced Audio Distribution (A2DP), Audio/Video Control Transport Protocol (AVCTP), Audio/Video Distribution Transport Protocol (AVDTP), Audio/Visual Remote Control Profile (AVRCP), Bluetooth Network Encapsulation Protocol (BNEP), Generic Access (GAP), Generic Audio/Video Distribution (GAVDP), Handsfree (HFP), Headset (HSP), Human Interface Device (HID), Logical Link Control and Adaptation Protocol, Message Access Profile (MAP), Multi-Channel Adaptation Protocol, Object Push (OPP), Personal Area Networking Profile (PAN), Phone Book Access (PBAP), Serial Port (SPP)Advanced Audio Distribution (A2DP), Audio/Video Control Transport Protocol (AVCTP), Audio/Video Distribution Transport Protocol (AVDTP), Audio/Visual Remote Control Profile (AVRCP), Generic Access (GAP), Generic Audio/Video Distribution (GAVDP), Handsfree (HFP), Headset (HSP), Human Interface Device (HID), Logical Link Control and Adaptation Protocol, Message Access Profile (MAP), Object Push (OPP), Phone Book Access (PBAP), Serial Port (SPP), Service Discovery Protocol (SDP), SIM Access (SAP) 
Wi-Fi802.11 b, g, n802.11 b, g, n 
Mobile hotspotYesYes 
Wi-Fi DirectYes  
USBUSB 2.0USB 2.0 
ConnectormicroUSBmicroUSB 
FeaturesMass storage device, USB chargingMass storage device, USB charging 
Headphones connector3.5mm3.5mm 
HDMI via microUSB 
Charging connectormicroUSBmicroUSB 
OtherComputer sync, OTA syncDLNA, MHL, UMA (Wi-Fi Calling), Computer sync, OTA sync, SyncML 
Other features
NotificationsHaptic feedback, Music ringtones (MP3), Polyphonic ringtones, Vibration, Flight mode, Silent mode, SpeakerphoneHaptic feedback, Music ringtones (MP3), Polyphonic ringtones, Vibration, Flight mode, Silent mode, Speakerphone 
SensorsAccelerometer, CompassAccelerometer, Gyroscope, Compass 
OtherVoice dialing, Voice commands, Voice recordingVoice dialing, Voice commands, Voice recording 
Regulatory Approval
FCC approval

FCC approval - The Federal Communications Commission (FCC) is an independent United States government agency, directly responsible to Congress. The FCC was established by the Communications Act of 1934 and is charged with regulating interstate and international communications by radio, television, wire, satellite and cable. The FCC's jurisdiction covers the 50 states, the District of Columbia, and U.S. possessions. Every wireless phone device that that is sold in the U.S. has to be tested and approved for sale by the FCC.

   
Date approved

Date approved - Shows the date when the particular phone is approved by the Federal Communications Commission

10 Jul 201211 Mar 2011 
FCC ID value: A3LGTS7562 linkFCC ID value: A3LGTI9100 link 
FCC measured SAR

FCC measured SAR - The exposure standard for mobile devices employs a unit of measurement known as the Specific Absorption Rate, or SAR. The SAR limit stated in the international guidelines is 2.0 W/ kg*. Tests for SAR are conducted using standard operating positions with the device transmitting at its highest certified power level in all tested frequency bands. Although the SAR is determined at the highest certified power level, the actual SAR of the device while operating can be well below the maximum value.

   
Head0.18 W/kg0.40 W/kg 
Body0.45 W/kg1.00 W/kg 
Product Specific Use0.45 W/kg1.00 W/kg 
Simultaneous Transmission0.65 W/kg1.16 W/kg 
Availability
Officially announced 13 Feb 2011 
Shopping information
MSRP price $ 800 

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