Karbonn A4 vs Microsoft Surface 2
Karbonn A4
Microsoft Surface 2
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Network
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2G networkGSM 850, 1900
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3G networkHSDPA 900, 2100-
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HSDPA speedHSDPA-
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HSUPA speedHSUPA-
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GPRSYes
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EDGEYes
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Availability
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Oficially announced2013-32013-9
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Status2013-32013-10
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Design
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SIMDual SIM (Mini-SIM)No
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Height124.8 mm274.6 mm
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Width66 mm172.5 mm
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Thickness9.5 mm8.9 mm
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Weight75 g675.9 g
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ColorsWhite/BlackDark Titanium
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Display
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Display typeTFT capacitive touchscreenTFT capacitive touchscreen
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Physical size4.0 inches10.6 inches
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Resolution320 x 480 pixels1920 x 1080 pixels
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Pixel density144 ppi208 ppi
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Display colors26214416777216
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Hardware
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CPUQuad-core 1.7 GHz ARM Cortex-A15
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Chipset-Nvidia Tegra 4 T40
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GPU-ULP GeForce (72 cores)
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Internal storage256, 512 MB32, 64 GB
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Memory RAM-2 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB64 GB
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OS
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OSAndroid OS, v2.3.6 (Gingerbread)Microsoft Windows 8.1 RT
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Main camera
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Main camera3.15 MP5 MP
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Primary camera resolution2048 x 1536 pixels2592 x 1936 pixels
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Primary camera videovideo1080p@30fps
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Primary camera Autofocus-autofocus
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Primary camera flash-LED flash
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Selfie camera
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Secondary cameraYes-
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Selfie camera3.5 MP
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Selfie camera video-1080p@30fps
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes, with stereo speakers
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NotificationsVibration, MP3, WAV ringtonesVibration, MP3 ringtones
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Multimedia
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Radio-No
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Radio FMFM radio-
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Connectivity
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WLANWi-FiWi-Fi 802.11a, 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYes-
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WLAN WiFi Direct-Yes
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WLAN WiFi Dual Band-Yes
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USBYes3.0
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USB host-Yes
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BluetoothYesv4.0
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Bluetooth A2DP-Yes
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GPSNoNo
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Features
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Messaging SMSSMS(threaded view)-
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Messaging MMSMMS-
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Messaging EmailEmailEmail
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Messaging IMIMIM
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Messaging Push Email-Push Email
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JavaYes, via Java MIDP emulatorNo
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Browser
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HTMLYesHTML5
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1400 mAh-
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Battery removable-Non-removable
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Talk time4 h 20 min-
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Standby time250 h-
