Asus PadFone X vs Karbonn A4
Asus PadFone X
Karbonn A4
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 1900
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3G networkHSDPA 850, 900, 1900, 2100HSDPA 900, 2100
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4G networkLTE 700, 850, 1700, 1800, 1900, 2100, 2600-
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HSDPA speedHSDPA MbpsHSDPA
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HSUPA speedHSUPA MbpsHSUPA
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DC-HSPA+ speedDC-HSPA+ Mbps-
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LTE speedLTE, Cat4, 150 Mbps download, 50 Mbps upload-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-32013-3
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Status2014-72013-3
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Design
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SIMMicro-SIMDual SIM (Mini-SIM)
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Height143.4 mm124.8 mm
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Width72.5 mm66 mm
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Thickness10 mm9.5 mm
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Weight150 g75 g
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ColorsPlatinum White, Titanium BlackWhite/Black
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Display
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Display typeSuper IPS+ LCD capacitive touchscreenTFT capacitive touchscreen
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Physical size5.0 inches4.0 inches
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Resolution1080 x 1920 pixels320 x 480 pixels
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Pixel density441 ppi144 ppi
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Display colors16777216262144
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Hardware
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CPUQuad-core 2.3 GHz Krait 400
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ChipsetQualcomm Snapdragon 800-
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GPUAdreno 330-
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Memory RAM2 GB-
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Internal storage16 GB256, 512 MB
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Memory cardmicroSDmicroSD
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Memory card max64 GB32 GB
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OS
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OSAndroid OS, v4.4.2 (KitKat)Android OS, v2.3.6 (Gingerbread)
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Main camera
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Main camera13 MP3.15 MP
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Primary camera resolution4128 x 3096 pixels2048 x 1536 pixels
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Primary camera video2160p@25fps, 1080p@25fpsvideo
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Primary camera Autofocusautofocus-
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Primary camera flashLED flash-
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Selfie camera
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Secondary camera-Yes
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Selfie camera2 MP
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Selfie camera video1080p@25fps-
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration, MP3 ringtonesVibration, MP3, WAV ringtones
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Multimedia
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RadioNo-
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Radio FM-FM radio
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11acWi-Fi
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYes-
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WLAN WiFi Dual BandYes-
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USBv2.0(SlimPort)Yes
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USB hostYes-
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Bluetoothv4.0Yes
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Bluetooth A2DPYes-
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GPSYes, with A-GPSNo
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GLONASSYes-
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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Messaging MMSMMSMMS
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Messaging EmailEmailEmail
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Messaging IMIMIM
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Messaging Push EmailPush Email-
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JavaYes, via Java MIDP emulatorYes, via Java MIDP emulator
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Browser
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HTMLHTML5Yes
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity2300 mAh1400 mAh
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Battery removableNon-removable-
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Talk time-4 h 20 min
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Talk time 3G20 h-
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Standby time-250 h
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Standby time 3G456 h-