BlackBerry Z3 vs Karbonn A21
BlackBerry Z3
Karbonn A21
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 900, 1800, 1900
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3G networkHSDPA 900, 1900, 2100HSDPA 2100
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HSDPA speed-HSDPA, 7.2 Mbps
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HSPA+ speedHSPA+-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-22014-12
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Status2014-5
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Design
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SIMMicro-SIMDual SIM (Mini-SIM)
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Height140 mm
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Width72.8 mm
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Thickness9.3 mm
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Weight164 g
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ColorsBlackPearl White
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Display
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Display typeCapacitive touchscreenTFT capacitive touchscreen
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Physical size5.0 inches4.5 inches
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Resolution540 x 960 pixels480 x 800 pixels
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Pixel density220 ppi207 ppi
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Display colors16777216262144
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Hardware
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CPUDual-core 1.2 GHz Krait 200Dual-core 1.2 GHz
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ChipsetQualcomm MSM8230 Snapdragon 400-
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GPUAdreno 305-
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Memory RAM1.5 GB512 MB
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Internal storage8 GB4 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB32 GB
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OS
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OSBlackBerry 10.2.1 vOSAndroid OS, v4.0 (Ice Cream Sandwich)
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Main camera
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Main camera5 MP5 MP
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Primary camera resolution2592 x 1944 pixels2592 x 1944 pixels
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Primary camera video1080pvideo
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Primary camera Autofocusautofocusautofocus
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Primary camera flashLED flashLED flash
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Selfie camera
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Selfie camera1.1 MP1.3 MP
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Selfie camera video720p-
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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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Radio-No
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Radio FMFM radio-
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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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WLAN WiFi HotspotYes-
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0v2.1
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Bluetooth A2DPYesYes
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bluetooth LEYes-
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GPSYes, with A-GPSYes, with A-GPS
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Features
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Messaging SMSSMSSMS(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 EmailPush Email
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Messaging BBM 6BBM 6-
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JavaYesYes, via Java MIDP emulator
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Java MIDPMIDP 2.1-
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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 capacity2500 mAh1800 mAh
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Battery removableNon-removable-
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Talk time15 h 30 min5 h
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Standby time384 h200 h