BenQ-Siemens EF91 vs Siemens A57
BenQ-Siemens EF91
Siemens A57
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Network
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2G networkGSM 900, 1800, 1900GSM 900, 1800
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3G networkHSDPA 2100-
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HSDPA speedHSDPA-
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GPRSYes
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EDGE
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Availability
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Status
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Oficially announced2006-22004
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Design
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SIMMini-SIMMini-SIM
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Height92 mm103 mm
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Width46.5 mm46 mm
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Thickness23.5 mm21.5 mm
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Weight100 g84 g
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ColorsArctic SilverCassis, Pebble
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Display
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Display typeTFTMonochrome graphic
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Physical size2.0 inches5 lines
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Resolution240 x 320 pixels101 x 64 pixels
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Pixel density200 ppi-
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Display colors262144-
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Hardware
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Internal storage32 MB-
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Memory cardmicroSD
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Main camera
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Main camera3.15 MP
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Primary camera resolution2048 x 1536 pixels-
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Primary camera videovideo-
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Primary camera Autofocusautofocus-
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Primary camera flashLED flash-
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Selfie camera
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Secondary cameraVGA camera-
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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 ringtones
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Multimedia
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RadioNoNo
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Connectivity
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WLAN
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USBYes
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Bluetoothv1.2
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Bluetooth A2DPYes-
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GPSNoNo
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Features
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Messaging SMSSMSSMS
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Messaging EMS-EMS
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Messaging MMSMMS-
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Messaging EmailEmail-
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WAPWAP 2.0/xHTMLWAP 1.2.1
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JavaYesNo
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Java MIDPMIDP 2.0-
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1000 mAh700 mAh
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Talk time-2 h
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Standby time-250 h
