Karbonn A21 vs Lenovo IdeaPad K1
Karbonn A21
Lenovo IdeaPad K1
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Network
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2G networkGSM 900, 1800, 1900
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3G networkHSDPA 2100HSDPA 2100
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HSDPA speedHSDPA, 7.2 MbpsHSDPA
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HSUPA speed-HSUPA
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EV-DO speed-3.1 Mbps
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GPRSYes
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EDGEYes
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Availability
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Status2011-7
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Oficially announced2014-122011-6
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Design
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SIMDual SIM (Mini-SIM)No
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Height264 mm
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Width189 mm
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Thickness13.3 mm
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Weight750 g
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ColorsPearl WhiteBlack, Brown, Red, White
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Display
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Display typeTFT capacitive touchscreenTFT capacitive touchscreen
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Physical size4.5 inches10.1 inches
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Resolution480 x 800 pixels800 x 1280 pixels
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Pixel density207 ppi149 ppi
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Display colors26214416777216
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Hardware
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CPUDual-core 1.2 GHzDual-core 1 GHz ARM Cortex-A9
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Chipset-Nvidia Tegra 2 T20
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GPU-ULP GeForce
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Memory RAM512 MB1 GB
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Internal storage4 GB16, 32 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, v4.0 (Ice Cream Sandwich)Android OS, v3.1 (Honeycomb)
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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 videovideo720p
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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 camera1.3 MP2 MP
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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 ringtonesN/A
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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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WLAN WiFi Hotspot-Yes
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USBmicroUSB 2.0miniUSB 2.0
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Bluetoothv2.1v2.1
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Bluetooth A2DPYesYes
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Bluetooth EDR-Yes
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GPSYes, with A-GPSYes, with A-GPS
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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 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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Adobe Flash-Yes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1800 mAh7400 mAh
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Battery removable-Non-removable
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Talk time5 h10 h
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Standby time200 h-
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