Motorola C257 vs Siemens A51
Motorola C257
Siemens A51
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Network
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2G networkGSM 900, 1800GSM 900, 1800
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GPRSYes
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EDGE
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Availability
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Oficially announced20052004
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Status
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Design
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SIMMini-SIMMini-SIM
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Height109.9 mm103 mm
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Width49.9 mm46 mm
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Thickness14.9 mm21 mm
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Weight91 g84 g
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ColorsBlackUrban Grey
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Display
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Display typeTFTMonochrome graphic
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Physical size-5 lines
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Resolution128 x 160 pixels101 x 64 pixels
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Display colors66560-
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Hardware
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Internal storage1 MB-
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Memory card
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Sound
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3.5mm jackNoNo
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LoudspeakerYesNo
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NotificationsVibration; Downloadable polyphonic ringtonesDownloadable 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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USB
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Bluetooth
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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 MMSMMS-
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WAPWAP 1.2WAP 1.2.1
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JavaNoNo
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity820 mAh700 mAh
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Talk time7 h 30 min5 h
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Standby time250 h250 h