Siemens A31 vs i-mobile 903
Siemens A31
i-mobile 903
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Network
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2G networkGSM 900, 1800GSM 900, 1800, 1900
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GPRSYesYes
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EDGE
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Availability
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Oficially announced2005-112007-5
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Status
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Design
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SIMMini-SIMMini-SIM
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Height102 mm106 mm
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Width46 mm47 mm
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Thickness17.6 mm17 mm
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Weight85 g88 g
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ColorsAnthracite, Ruby RedBlack, White
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Display
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Display typeCSTNTFT
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Physical size-2.0 inches
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Resolution128 x 128 pixels240 x 320 pixels
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Pixel density-200 ppi
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Display colors66560262144
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Hardware
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Internal storage1.5 MB64 MB
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Memory cardmicroSD
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Memory card included-1 GB
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Sound
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3.5mm jackNoNo
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LoudspeakerYesNo
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NotificationsVibration; Polyphonic(32) ringtonesVibration; 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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WLAN
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USBYes
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Bluetoothv2.0
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Bluetooth A2DP-Yes
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GPSNoNo
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Features
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Messaging SMSSMSSMS
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Messaging EMSEMSEMS
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Messaging MMSMMSMMS
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WAPWAP 1.2.1WAP 2.0/xHTML
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JavaYesYes
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Java MIDPMIDP 1.0-
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity820 mAh850 mAh
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Talk time5 h2 h
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Standby time270 h200 h
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Main camera
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Main camera2 MP
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Primary camera resolution-1632 x 1224 pixels
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Primary camera video-video
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Selfie camera
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Secondary camera-No