ZTE N721 vs ZTE X990
ZTE N721
ZTE X990
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Network
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2G networkGSM 900, 1800GSM 900, 1800
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3G networkHSDPA 850, 2100-
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HSDPA speedHSDPA, 7.2 Mbps-
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GPRSYesYes
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EDGEYesYes
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Availability
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Status2010-3
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Oficially announced2014-122010-3
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Design
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SIMMini-SIMMini-SIM
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Height106 mm107 mm
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Width56.2 mm61 mm
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Thickness14.2 mm12 mm
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Weight105 g90 g
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Keyboard-QWERTY
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ColorsBlackWhite
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Display
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Display typeTFT touchscreenTFT resistive touchscreen
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Physical size2.8 inches2.5 inches
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Resolution240 x 320 pixels320 x 240 pixels
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Pixel density143 ppi160 ppi
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Display colors57344262144
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Hardware
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Internal storage150 MB5 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 OSMicrosoft Windows Mobile 6.5 Professional
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Main camera
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Main camera2 MP2 MP
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Primary camera resolution1600 x 1200 pixels1600 x 1200 pixels
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Primary camera videovideovideo
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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, WAV ringtonesVibration; MP3, ringtones
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Connectivity
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WLANWi-Fi 802.11b, 802.11g
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USBmicroUSB 2.0microUSB 2.0
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BluetoothYesv2.0
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Bluetooth A2DP-Yes
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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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WAPWAP 2.0/xHTMLWAP 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 capacity1100 mAh-
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Talk time4 h 10 min8 h
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Standby time250 h480 h
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Multimedia
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Radio FM-Stereo FM radio with RDS
