Alcatel POP 7S vs Karbonn A21
Alcatel POP 7S
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, 2100HSDPA 2100
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4G networkLTE 800, 900, 1800, 2100, 2600-
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HSDPA speedHSDPA, 21 MbpsHSDPA, 7.2 Mbps
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HSUPA speedHSUPA, 5.76 Mbps-
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LTE speedLTE-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-12014-12
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Status2014
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Design
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SIMYesDual SIM (Mini-SIM)
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Height
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Width
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Thickness
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Weight285 g
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ColorsWhite, Black/ color back panelsPearl White
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Display
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Display typeIPS LCD capacitive touchscreenTFT capacitive touchscreen
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Physical size7.0 inches4.5 inches
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Resolution600 x 1024 pixels480 x 800 pixels
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Pixel density170 ppi207 ppi
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Display colors-262144
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Hardware
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CPUQuad-core 1.2 GHzDual-core 1.2 GHz
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Memory RAM-512 MB
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Internal storage-4 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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OSAndroid OS, v4.4.2 (KitKat)Android OS, v4.0 (Ice Cream Sandwich)
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Main camera
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Main camera3 MP5 MP
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Primary camera resolution-2592 x 1944 pixels
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Primary camera videovideovideo
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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, Polyphonic, MP3 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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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0v2.1
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Bluetooth A2DP-Yes
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GPSYesYes, 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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JavaYes, via Java MIDP emulatorYes, via Java MIDP emulator
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Browser
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HTMLYesYes
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Battery
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Battery type-Li-Ion
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Battery capacity-1800 mAh
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Talk time-5 h
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Standby time-200 h
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