Apple iPad Wi-Fi + 3G vs i-mobile 638CG
Apple iPad Wi-Fi + 3G
i-mobile 638CG
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 900, 1800, 1900
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3G networkHSDPA 850, 1900, 2100-
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HSDPA speedHSDPA-
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HSUPA speedHSUPA-
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GPRSYesYes
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EDGEYes
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Availability
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Oficially announced2010-12009
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Status2010-3
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Design
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SIMMicro-SIMDual SIM (Mini-SIM)
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Height242.8 mm113 mm
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Width189.7 mm51 mm
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Thickness13.4 mm14.5 mm
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Weight730 g
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ColorsSilverBlack
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Display
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Display typeLED-backlit IPS LCD, capacitive touchscreenTFT
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Physical size9.7 inches2.4 inches
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Resolution768 x 1024 pixels240 x 320 pixels
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Pixel density132 ppi167 ppi
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Display colors16777216262144
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Hardware
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CPU1 GHz ARM Cortex-A8
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ChipsetApple A4-
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GPUPowerVR SGX535-
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Memory RAM256 MB-
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Internal storage16, 32, 64 GB25 MB
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Memory cardmicroSD
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Memory card max-8 GB
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OS
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OSiOS 4-
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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NotificationsN/AVibration; Downloadable polyphonic, MP3 ringtones
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Multimedia
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RadioNo-
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Radio FM-FM radio
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n
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WLAN WiFi Dual BandYes-
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USB2.0Yes
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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 EMS-EMS
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Messaging MMS-MMS
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Messaging EmailEmail-
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Messaging IMIM-
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Messaging iMessageiMessage-
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Messaging Push EmailPush Email-
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WAP-WAP 2.0/xHTML
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JavaNoNo
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Browser
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HTMLHTML (Safari)-
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity6600 mAh1050 mAh
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Battery removableNon-removable-
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Talk time-8 h 30 min
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Standby time-400 h
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Main camera
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Main camera3.15 MP
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Primary camera resolution-2048 x 1536 pixels
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Primary camera video-video
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Selfie camera
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Secondary camera-No