BenQ-Siemens C31 vs BenQ-Siemens EF51
BenQ-Siemens C31
BenQ-Siemens EF51
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Network
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2G networkGSM 900, 1800, 1900GSM 900, 1800, 1900
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GPRSYesYes
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EDGE
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Availability
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Oficially announced2007-62006-2
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Status
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Design
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SIMMini-SIMMini-SIM
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Height99.8 mm89 mm
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Width46.7 mm49 mm
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Thickness16.7 mm18 mm
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Weight86 g95 g
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ColorsGraphiteGloss, SilverShineBlack, Flashy White
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Display
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Display typeTFTTFT
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Physical size1.8 inches2.2 inches
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Resolution176 x 220 pixels120 x 128 pixels
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Pixel density157 ppi80 ppi
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Display colors262144262144
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Hardware
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Internal storage20 MB20 MB
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Memory cardmicroSDminiSD
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Main camera
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Main camera1.3 MP1.3 MP
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Primary camera resolution1280 x 1024 pixels1280 x 1024 pixels
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Primary camera videovideono
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Selfie camera
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Secondary cameraNoNo
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Sound
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3.5mm jackNoNo
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LoudspeakerYesNo
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NotificationsVibration; Downloadable polyphonic, 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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WLAN
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USB1.1Yes
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Bluetoothv1.2
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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 MMSMMSMMS
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WAPWAP 2.0/xHTMLWAP 2.0/xHTML
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JavaYesYes
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Java MIDPMIDP 2.0MIDP 2.0
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity920 mAh870 mAh
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Talk time3 h 30 min4 h
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Standby time170 h200 h
