LG GT540 Optimus vs ZTE X990D
LG GT540 Optimus
ZTE X990D
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 900, 1800
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3G networkHSDPA 900, 2100-
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HSDPA speedHSDPA, 7.2 Mbps-
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GPRSYesYes
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EDGEYes
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Availability
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Oficially announced2010-12014-12
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Status2010-62014-12
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Design
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SIMMini-SIMDual SIM (Mini-SIM)
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Height109 mm107 mm
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Width54.5 mm61 mm
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Thickness12.7 mm12 mm
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Weight115.5 g90 g
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Keyboard-QWERTY
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ColorsBlack, Pink, WhiteWhite
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Display
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Display typeTFT resistive touchscreenTFT resistive touchscreen
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Physical size3.0 inches2.5 inches
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Resolution320 x 480 pixels320 x 240 pixels
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Pixel density192 ppi160 ppi
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Display colors262144262144
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Hardware
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CPU600 MHz
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Memory RAM156 MB-
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Internal storage139 MB-
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Memory cardmicroSDmicroSD
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Memory card max32 GB8 GB
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OS
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OSAndroid OS, v1.6 (Donut)-
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Main camera
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Camera typePhoto-
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Main camera3.15 MP2 MP
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Primary camera resolution2048 x 1536 pixels1600 x 1200 pixels
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Primary camera video480p@17fpsvideo
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Primary camera Autofocusautofocus-
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Selfie camera
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Secondary cameraNoNo
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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NotificationsVibration, MP3 ringtonesVibration; MP3, ringtones
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Multimedia
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Radio FMStereo FM radio with RDSStereo FM radio with RDS
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Connectivity
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WLANWi-Fi 802.11b, 802.11g
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USBYesmicroUSB 2.0
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Bluetoothv2.1v2.0
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Bluetooth A2DPYesYes
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GPSYes, with A-GPSNo
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Features
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Messaging SMSSMS(threaded view)SMS
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Messaging MMSMMSMMS
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Messaging EmailEmailEmail
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Messaging IMIMIM
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Messaging Push EmailPush Email-
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WAP-WAP 2.0/xHTML
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JavaYes, via Java MIDP emulatorYes
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Java MIDP-MIDP 2.0
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Browser
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HTMLYesYes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1500 mAh-
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Talk time--
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Talk time 2G5 h 30 min-
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Talk time 3G7 h 20 min-
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Standby time--
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Standby time 2G500 h-
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Standby time 3G500 h-
