Apple iPad 2 CDMA vs Celkon A20
Apple iPad 2 CDMA
Celkon A20
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Network
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2G networkCDMA 800, 1900GSM 900, 1800
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3G networkCDMA2000 1xEV-DOHSDPA 2100
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EV-DO speed3.1 Mbps-
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Speed Yes-Yes, 384 kbps
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GPRSYes
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EDGEYes
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Availability
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Oficially announced2011-32013-8
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Status2011-32013-8
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Design
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SIMMini-SIMDual SIM (Mini-SIM)
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Height241.2 mm
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Width185.7 mm
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Thickness8.8 mm
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Weight607 g
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ColorsBlack, WhiteBlack
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Display
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Display typeLED-backlit IPS LCD, capacitive touchscreenTFT capacitive touchscreen
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Physical size9.7 inches4.0 inches
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Resolution768 x 1024 pixels480 x 800 pixels
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Pixel density132 ppi233 ppi
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Display colors16777216-
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Hardware
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CPUDual-core 1 GHz ARM Cortex-A9Dual-core 1.2 GHz
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ChipsetApple A5-
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GPUPowerVR SGX543MP2-
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Memory ROM-256 MB
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Memory RAM512 MB512 MB
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Internal storage16, 32, 64 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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OSiOS 4Android OS, v4.2.0 (Jelly Bean)
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Main camera
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Main camera0.7 MP3.15 MP
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Primary camera resolution960 x 720 pixels2048 x 1536 pixels
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Primary camera video720p@30fpsvideo
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Selfie camera
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Secondary cameraVGA cameraVGA camera
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsN/AVibration, Polyphonic, MP3 ringtones
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Multimedia
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RadioNo-
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11nWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi Dual BandYes-
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USB2.0microUSB 2.0
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Bluetoothv2.1Yes
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Bluetooth A2DPYes-
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Bluetooth EDRYes-
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GPSYes, with A-GPSNo
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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 iMessageiMessage-
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Messaging Push EmailPush EmailPush Email
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JavaNoYes, via Java MIDP emulator
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Browser
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HTMLHTML (Safari)Yes
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity6930 mAh1500 mAh
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Battery removableNon-removable-
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Talk time--
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Standby time--
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