Apple iPad 4 Wi-Fi vs Celkon A20
Apple iPad 4 Wi-Fi
Celkon A20
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Network
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2G networkGSM 900, 1800
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3G network-HSDPA 2100
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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 announced2012-102013-8
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Status2012-112013-8
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Design
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SIMNoDual SIM (Mini-SIM)
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Height241.2 mm
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Width185.7 mm
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Thickness9.4 mm
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Weight652 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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Resolution1536 x 2048 pixels480 x 800 pixels
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Pixel density264 ppi233 ppi
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Display colors16777216-
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Hardware
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CPUDual-core 1.4 GHzDual-core 1.2 GHz
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ChipsetApple A6X-
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GPUPowerVR SGX554MP4 (quad-core graphics)-
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Memory ROM-256 MB
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Memory RAM1 GB512 MB
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Internal storage16, 32, 64, 128 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 6Android OS, v4.2.0 (Jelly Bean)
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Main camera
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Camera typePhoto / Video-
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Main camera5 MP3.15 MP
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Primary camera resolution2592 x 1944 pixels2048 x 1536 pixels
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Primary camera video1080p@30fpsvideo
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Primary camera Autofocusautofocus-
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Selfie camera
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Secondary camera-VGA camera
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Selfie camera1.2 MP
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Secondary camera face detectionface detection-
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Secondary camera face timeFaceTime over Wi-Fi-
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Selfie camera video720p@30fps-
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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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USBLightning, USB 2.0microUSB 2.0
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Bluetoothv4.0Yes
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Bluetooth A2DPYes-
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GPSNoNo
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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 capacity11560 mAh1500 mAh
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Battery removableNon-removable-
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Talk time10 h-
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Standby time720 h-
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