Acer DX900 vs Bird S661
Acer DX900
Bird S661
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 900, 1800
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3G networkHSDPA 850, 1900, 2100-
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HSDPA speedHSDPA, 7.2 Mbps-
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GPRSYes
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EDGEYes
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Availability
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Oficially announced2009-42014-12
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Status
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Design
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SIMDual SIM (Mini-SIM)Mini-SIM
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Height106 mm105.3 mm
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Width60.5 mm44 mm
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Thickness17 mm15.8 mm
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Weight147 g80 g
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ColorsBlackBlack, Pink
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Display
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Display typeTFT resistive touchscreenCSTN
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Physical size2.8 inches1.5 inches
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Resolution480 x 640 pixels128 x 128 pixels
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Pixel density286 ppi121 ppi
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Display colors6656066560
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Hardware
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CPU533 MHz Samsung S3C 6410
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Memory ROM256 MB-
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Memory RAM128 MB-
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Memory cardmicroSD
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OS
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OSMicrosoft Windows Mobile 6.1 Professional-
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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, WAV ringtonesVibration; Downloadable polyphonic, MIDI ringtones
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Multimedia
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RadioNoNo
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Connectivity
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WLANWi-Fi 802.11b, 802.11g
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USBYes
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Bluetoothv2.0
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Bluetooth A2DPYes-
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GPSYes, SiRF Star III chipsetNo
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Features
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Messaging SMSSMSSMS
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Messaging MMSMMS-
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Messaging Instant MessagingInstant Messaging-
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Messaging EmailEmail-
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Java-No
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Browser
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HTMLYes-
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Browser-No
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity1530 mAh700 mAh
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Talk time10 h3 h
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Standby time150 h140 h
