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Nokia Lumia 820 vs HTC Windows Phone 8X vs Apple iPhone 4s

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Nokia Lumia 820 Remove phone

Posted: 05 Sep 2012
Market Status: Released
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HTC Windows Phone 8X Remove phone

Posted: 19 Sep 2012
Market Status: Released US carrier availability: Available - Verizon
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Apple iPhone 4s Remove phone

Posted: 04 Oct 2011
Market Status: Released US carrier availability: Available - Verizon, AT&T, Sprint, Virgin Mobile, Boost Mobile
Design
Device typeSmart phoneSmart phoneSmart phone
OSWindows Phone 8Windows Phone 8.1, 8iOS (8.x, 7.x, 6.1, 6, 5.1, 5)
Dimensions4.87 x 2.70 x 0.39 inches (123.8 x 68.5 x 9.9 mm)5.21 x 2.61 x 0.40 inches (132.3 x 66.2 x 10.1 mm)4.54 x 2.31 x 0.37 inches (115.2 x 58.6 x 9.3 mm)
Weight5.64 oz (160 g)
the average is 4.8 oz (137 g)
4.59 oz (130 g)
the average is 4.8 oz (137 g)
4.94 oz (140 g)
the average is 4.8 oz (137 g)
Body material  Glass
Display
Physical size4.3 inches4.3 inches3.5 inches
Resolution480 x 800 pixels720 x 1280 pixels640 x 960 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.

217 ppi342 ppi326 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.

AMOLEDS-LCD 2IPS LCD
Screen-to-body ratio62.04 %58.10 %55.27 %
Colors16 777 21616 777 21616 777 216
TouchscreenMulti-touchMulti-touchMulti-touch
FeaturesLight sensor, Proximity sensorLight sensor, Proximity sensor, Scratch-resistant glass (Corning Gorilla Glass)Light sensor, Proximity sensor, Oleophobic coating
Camera
Camera8 megapixels8 megapixels8 megapixels
FlashDual LEDLEDLED
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.

F2.2F2.0F2.4
Focal length (35mm equivalent)28 mm28 mm35.00 mm
Camera sensor size1/3.2" 1/3.2"
FeaturesAutofocus, Touch to focus, Exposure compensation, ISO control, White balance presets, Digital zoom, Geo tagging, Macro mode, Night modeBack-illuminated sensor (BSI), Autofocus, Geo taggingBack-illuminated sensor (BSI), Autofocus, Touch to focus, Digital image stabilization, Face detection, Geo tagging
Camcorder1920x1080 (1080p HD) (30 fps)1920x1080 (1080p HD) (30 fps)1920x1080 (1080p HD) (30 fps)
FeaturesContinuous autofocus, Video callingVideo callingDigital image stabilization
Front-facing camera0.3 megapixels VGA2 megapixels0.3 megapixels VGA
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 S4 Plus MSM8960Qualcomm Snapdragon S4 Plus MSM8960Apple A5
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.

Dual core, 1500 MHz, KraitDual core, 1500 MHz, KraitDual core, 800 MHz, ARM Cortex-A9
Graphics processorAdreno 225Adreno 225PowerVR SGX 543MP2
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.

1024 MB RAM1024 MB RAM512 MB RAM
Built-in storage8 GB16 GB64 GB
Storage expansionmicroSD, microSDHC, microSDXC up to 64 GB  
Battery
Talk time15.40 hours
the average is 11 h (678 min)
11.30 hours
the average is 11 h (678 min)
14.00 hours
the average is 11 h (678 min)
Stand-by time15.0 days (360 hours)
the average is 20 days (479 h)
12.1 days (290 hours)
the average is 20 days (479 h)
8.3 days (200 hours)
the average is 20 days (479 h)
Talk time (3G)8.10 hours
the average is 15 h (899 min)
 8.00 hours
the average is 15 h (899 min)
Stand-by time (3G)15.0 days (360 hours)
the average is 23 days (543 h)
  
Capacity1650 mAh1800 mAh 
Not user replaceable  Yes
Wireless chargingOptional  
specifications continue after the ad
Multimedia
Music player   
Filter byAlbum, Artist, PlaylistsAlbum, Artist, PlaylistsAlbum, Artist, Genre, Playlists
FeaturesAlbum art cover, Background playbackAlbum art cover, Background playback, Beats AudioAlbum art cover, Background playback
RadioFM, Stereo, RDS  
Speakers Earpiece, LoudspeakerEarpiece, Loudspeaker
YouTube player  Yes
Internet browsing
BrowserInternet Explorer 10Internet Explorer 10 
Built-in online services supportFacebook, YouTube (upload), Flickr, Picasa/Google+, TwitterFacebook, YouTube (upload), Picasa/Google+, TwitterYouTube (upload)
Technology
CDMA

CDMA - Code Division Multiple Access. A technique of multiplexing, also called spread spectrum, in which analog signals are converted into digital form for transmission. For each communication channel, the signals are encoded in a sequence known to the transmitter and the receiver for that channel. The foremost application is digital cellular phone technology from QUALCOMM that operates in the 800MHz band and 1.9GHz PCS band. CDMA phones are noted for their excellent call quality and long battery life.

 800, 1900 MHz800, 1900 MHz
GSM850, 900, 1800, 1900 MHz850, 900, 1800, 1900 MHz850, 900, 1800, 1900 MHz
UMTS850, 900, 1900, 2100 MHz850, 900, 1700/2100, 1900, 2100 MHz850, 900, 1900, 2100 MHz
FDD LTE800 (band 18), 900 (band 8), 1800 (band 3), 2100 (band 1), 2600 (band 7) MHz700 (band 17), 1700/2100 (band 4) MHz 
DataLTE Cat 3 (100/50 Mbit/s), , HSDPA+ (4G) 42.2 Mbit/s, UMTS, EDGE, GPRSLTE Cat 3 (100/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS, EDGE, GPRS, EV-DO Rev.AHSDPA 14.4 Mbit/s, HSUPA 5.76 Mbit/s, UMTS, EDGE, EV-DO Rev.A
Micro SIMYesYesYes
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.

GPS, A-GPS, S-GPS, Glonass, Cell ID, Wi-Fi positioningGPS, A-GPS, GlonassA-GPS, Glonass
NavigationTurn-by-turn navigation, Voice navigationTurn-by-turn navigationYes
Connectivity
Bluetooth3.03.1, EDR4.0
Wi-Fi802.11 a, b, g, n, n 5GHz802.11 a, b, g, n, n 5GHz802.11 b, g, n
Mobile hotspotYesYesYes
USBUSB 2.0USB 2.0USB 2.0
ConnectormicroUSBmicroUSBProprietary
FeaturesMass storage device, USB chargingMass storage device, USB chargingUSB charging
OtherNFC, Computer sync, OTA syncNFC, DLNA, Computer sync, OTA syncTV-Out, Computer sync, OTA sync
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, SpeakerphoneMusic ringtones (MP3), Polyphonic ringtones, Vibration, Flight mode, Silent mode, Speakerphone
Additional microphone(s)for Noise cancellation for Noise cancellation
SensorsAccelerometer, Gyroscope, CompassAccelerometer, CompassAccelerometer, Gyroscope, Compass
Hearing aid compatibility M3, T3 
OtherVoice dialing, Voice commands, Voice recording, TTY/TDDVoice dialing, Voice commands, Voice recordingVoice dialing, Voice commands, Voice recording
Availability
Officially announced05 Sep 201219 Sep 201204 Oct 2011
Shopping information
AccessoriesNokia AC-50 MicroUSB Charger, Nokia Charging and Data Cable CA-190CD, Nokia Headset WH-208, Product user guide Apple Earphones with Remote and Mic, Dock Connector to USB Cable, USB Power Adapter, Documentation

To see the full specifications with in-depth details click here.

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