Amazon Fire HD 6 vs Karbonn A21
Amazon Fire HD 6
Karbonn A21
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Network
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2G networkGSM 900, 1800, 1900
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3G network-HSDPA 2100
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HSDPA speed-HSDPA, 7.2 Mbps
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GPRSYes
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EDGEYes
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Availability
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Oficially announced2014-92014-12
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Status2014-10
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Design
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SIMNoDual SIM (Mini-SIM)
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Height169 mm
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Width103 mm
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Thickness10.7 mm
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Weight290 g
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ColorsBlack, Citron, Cobalt, Magenta, WhitePearl White
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Display
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Display typeIPS LCD capacitive touchscreenTFT capacitive touchscreen
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Physical size6.0 inches4.5 inches
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Resolution800 x 1280 pixels480 x 800 pixels
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Pixel density252 ppi207 ppi
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Display colors16777216262144
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Hardware
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CPUQuad-core 1.5 GHzDual-core 1.2 GHz
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Memory RAM1 GB512 MB
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Internal storage8, 16 GB4 GB
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Memory cardmicroSD
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Memory card max-32 GB
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OS
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OSAndroid OS, v4.4 (KitKat)Android OS, v4.0 (Ice Cream Sandwich)
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Main camera
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Main camera2 MP5 MP
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Primary camera resolution1600 x 1200 pixels2592 x 1944 pixels
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Primary camera video1080pvideo
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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 cameraVGA camera-
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Selfie camera1.3 MP
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration; MP3, WAV ringtonesVibration, MP3, WAV ringtones
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Multimedia
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RadioNoNo
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11b, 802.11g, 802.11n
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USBv2.0(Slimport)microUSB 2.0
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BluetoothYesv2.1
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Bluetooth A2DP-Yes
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GPSNoYes, with A-GPS
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Features
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Messaging SMS-SMS(threaded view)
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Messaging MMS-MMS
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Messaging EmailEmailEmail
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Messaging IMIMIM
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Messaging Push EmailPush EmailPush Email
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JavaNoYes, via Java MIDP emulator
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SensorsAccelerometer, gyro-
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Browser
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HTMLHTML5Yes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity-1800 mAh
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Battery removableNon-removable-
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Talk time8 h5 h
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Standby time-200 h
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