T-Mobile Comet vs i-mobile 638CG
T-Mobile Comet
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 900, 1700, 2100-
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HSDPA speedHSDPA, 7.2 Mbps-
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GPRSYesYes
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EDGEYes
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Availability
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Status2010-11
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Oficially announced2010-112009
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Design
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SIMMini-SIMDual SIM (Mini-SIM)
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Height104.1 mm113 mm
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Width55.9 mm51 mm
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Thickness12.7 mm14.5 mm
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Weight102.1 g
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ColorsBlackBlack
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Display
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Display typeTFT capacitive touchscreenTFT
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Physical size2.8 inches2.4 inches
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Resolution240 x 320 pixels240 x 320 pixels
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Pixel density143 ppi167 ppi
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Display colors262144262144
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Hardware
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CPU528 MHz ARM 11
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ChipsetQualcomm MSM7225-
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Internal storage-25 MB
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Memory cardmicroSDmicroSD
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Memory card max32 GB8 GB
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Memory card included2 GB-
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OS
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OSAndroid OS, v2.2 (Froyo)-
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Main camera
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Main camera3.15 MP3.15 MP
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Primary camera resolution2048 x 1536 pixels2048 x 1536 pixels
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Primary camera videoCIFvideo
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Selfie camera
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Secondary cameraNoNo
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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NotificationsVibration, MP3 ringtonesVibration; Downloadable polyphonic, MP3 ringtones
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Multimedia
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Radio FMFM radioFM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYes-
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USBmicroUSB 2.0Yes
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Bluetoothv2.0Yes
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Bluetooth A2DPYes-
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GPSYes, with A-GPSNo
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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Messaging EMS-EMS
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Messaging MMSMMSMMS
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Messaging EmailEmail-
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Messaging IMIM-
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Messaging Push EmailPush Mail-
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WAP-WAP 2.0/xHTML
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JavaYes, via Java MIDP emulatorNo
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Browser
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HTMLYes-
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Adobe FlashYes-
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1200 mAh1050 mAh
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Talk time9 h8 h 30 min
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Standby time288 h400 h
