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Lenovo IdeaPhone K900 vs Asus PadFone Infinity Size compare


Lenovo IdeaPhone K900 Remove phone

Posted: 14 Jan 2013
Market Status: Released

Asus PadFone Infinity Remove phone

Posted: 25 Feb 2013
Market Status: Released

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Device typeSmart phoneSmart phone 
OSAndroid (4.2)Android (4.4, 4.2) 
Dimensions6.18 x 3.07 x 0.27 inches (157 x 78 x 6.9 mm)5.65 x 2.87 x 0.35 inches (143.5 x 72.8 x 8.9 mm) 
Weight5.71 oz (162 g)
the average is 5.2 oz (150 g)
5.11 oz (145 g)
the average is 5.2 oz (150 g)
Colors Gray, Pink, Gold 
Physical size5.5 inches5.0 inches 
Resolution1080 x 1920 pixels1080 x 1920 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.

401 ppi441 ppi 

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.

Screen-to-body ratio68.13 %65.88 % 
FeaturesLight sensor, Proximity sensor, Scratch-resistant glass (Corning Gorilla Glass 2)Light sensor, Proximity sensor, Scratch-resistant glass 
Camera13 megapixels13 megapixels 
FlashDual LEDLED 
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.

Hardware FeaturesAutofocus, Back-illuminated sensor (BSI)Autofocus, Back-illuminated sensor (BSI) 
Software FeaturesGeo taggingGeo tagging, Self-timer 
Shooting Modes Burst mode, High Dynamic Range mode (HDR), Panorama, Scenes, Effects 
Camcorder1920x1080 (1080p HD)1920x1080 (1080p HD) (30 fps), 1280x720 (720p HD) (60 fps) 
Features Video calling 
Front-facing camera2 megapixels2 megapixels 
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.

Intel Atom Z2580Qualcomm Snapdragon 600 APQ8064T 

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, 2000 MHz, SaltwellQuad-core, 1700 MHz, Krait 300 
Graphics processorPowerVR SGX 544 MP2Adreno 320 
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.

Built-in storage16 GB64 GB 
Capacity2500 mAh2400 mAh 
TypeUser replaceable, Li - PolymerUser replaceable, Li - Polymer 
Talk time15.00 hours
the average is 15 h (880 min)
19.00 hours
the average is 15 h (880 min)
Stand-by time12.5 days (300 hours)
the average is 16 days (375 h)
17.1 days (410 hours)
the average is 16 days (375 h)
Talk time (3G)12.00 hours
the average is 17 h (1014 min)
specifications continue after the ad
Mirroring SlimPort, TV-out 
Music player   
Filter byAlbum, Artist, PlaylistsAlbum, Artist, Playlists 
FeaturesAlbum art cover, Background playbackAlbum art cover, Background playback 
RadioFM, Stereo, RDS  
SpeakersEarpiece, LoudspeakerEarpiece, Loudspeaker 
GSM850, 900, 1800, 1900 MHz850, 900, 1800, 1900 MHz 
UMTS850, 900, 1700/2100, 1900, 2100 MHz900, 2100 MHz 
LTE (FDD) Bands 18, 3, 1, 7 
DataHSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTSLTE Cat 3 (100/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS 
Micro SIMYes  
Nano SIM Yes 
Phone features
SensorsAccelerometer, CompassAccelerometer, Gyroscope, Compass 
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 
Other featuresVoice dialing, Voice commands, Voice recordingVoice dialing, Voice commands, Voice recording 
Wi-Fi802.11 b, g, n802.11 a, b, g, n, dual-band, ac 
Mobile hotspotYesYes 
USBUSB 2.0USB 2.0 
FeaturesMass storage device, USB chargingMass storage device, USB charging 

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-GPSGPS, A-GPS, Glonass 
OtherTethering, Computer sync, OTA syncNFC, Tethering, Computer sync, OTA sync 
Officially announced08 Jan 201325 Feb 2013 
Shopping information
MSRP price $ 1200 
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 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

29 Oct 2013  
FCC ID value: YCNK900 link  
FCC measured SAR

FCC measured SAR - Working closely with federal health and safety agencies, such as the Food and Drug Administration (FDA), the FCC has adopted limits for safe exposure to radiofrequency (RF) energy. These limits are given in terms of a unit referred to as the Specific Absorption Rate (SAR), which is a measure of the amount of radio frequency energy absorbed by the body when using a mobile phone. The FCC requires cell phone manufacturers to ensure that their phones comply with these objective limits for safe exposure. Any cell phone at or below these SAR levels (that is, any phone legally sold in the U.S.) is a "safe" phone, as measured by these standards. The FCC limit for public exposure from cellular telephones is an SAR level of 1.6 watts per kilogram (1.6 W/kg).

Head0.42 W/kg  
Body1.19 W/kg  
Product Specific Use1.25 W/kg  
Simultaneous Transmission1.40 W/kg  

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

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