Acer Iconia A1-830 vs Karbonn A21
Acer Iconia A1-830
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 announced2014-12014-12
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Status2014-3
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Design
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SIMNoDual SIM (Mini-SIM)
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Height203 mm
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Width138.4 mm
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Thickness8.2 mm
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Weight380 g
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ColorsWhitePearl White
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Display
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Display typeLED-backlit IPS LCD capacitive touchscreenTFT capacitive touchscreen
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Physical size7.9 inches4.5 inches
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Resolution768 x 1024 pixels480 x 800 pixels
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Pixel density162 ppi207 ppi
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Display colors16777216262144
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Hardware
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CPUDual-core 1.6 GHzDual-core 1.2 GHz
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ChipsetIntel Atom Z2560-
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GPUPowerVR SGX544-
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Memory RAM1 GB512 MB
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Internal storage16 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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OSAndroid OS, v4.2 (Jelly Bean)Android 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 flash-LED flash
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Selfie camera
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Selfie camera2 MP1.3 MP
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsN/AVibration, 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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Bluetoothv3.0v2.1
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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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HTMLHTML5Yes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity4000 mAh1800 mAh
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Battery removableNon-removable-
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Talk time7 h 30 min5 h
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Standby time-200 h
