ZTE Grand Memo V9815 vs vivo Y51
ZTE Grand Memo V9815
vivo Y51
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPA 900, 2100TD-SCDMA
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4G networkLTE 800, 900, 1800, 2600-
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HSDPA speedHSDPA-
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HSUPA speedHSUPA-
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TD-SCDMA speed-TD-SCDMA
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LTE speedLTE, Cat3, 100 Mbps download, 50 Mbps upload-
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TD-LTE speed-TD-LTE
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2013-22015-12
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Status2013-32015-12
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Design
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SIMYesDual SIM
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Height159.9 mm143.8 mm
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Width82.6 mm71.7 mm
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Thickness8.5 mm7.5 mm
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Weight189 g157 g
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ColorsBlackWhite
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Display
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Display typeTFT capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size5.7 inches5.0 inches
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Resolution720 x 1280 pixels540 x 960 pixels
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Pixel density258 ppi220 ppi
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Display colors1677721616777216
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Hardware
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CPUQuad-core 1.7 GHz Krait 400Quad-core 1.2 GHz
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ChipsetQualcomm MSM8974 Snapdragon 800-
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GPUAdreno 330-
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Memory RAM2 GB2 GB
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Internal storage16 GB16 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB128 GB
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OS
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OSAndroid OS, v4.1.2 (Jelly Bean)Android OS, v5.0.2 (Lollipop)
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Main camera
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Main camera13 MP8 MP
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Primary camera resolution4128 x 3096 pixels3264 x 2448 pixels
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Primary camera video1080p@30fps1080p@30fps
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Primary camera Autofocusautofocusautofocus
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Primary camera flashLED flashLED flash
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Camera features-Geo-tagging, HDR, face detection, panorama, touch focus
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Selfie camera
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Selfie camera1 MP5 MP
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration; MP3 ringtonesVibration; MP3, WAV ringtones
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Multimedia
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Radio FMFM radioFM radio
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11nWi-Fi
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WLAN WiFi HotspotYes-
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WLAN WiFi DirectYes-
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WLAN WiFi Dual BandYes-
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WLAN DLNAYes-
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0Yes
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Bluetooth A2DPYes-
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bluetooth LEYes-
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GPSYes, with A-GPSYes, with A-GPS
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BDS-Yes
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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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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Messaging Push Mail-Push Mail
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JavaYes, via Java MIDP emulatorNo
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Sensors-Accelerometer, compass, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-ionLi-Ion
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Battery capacity3200 mAh2350 mAh
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Battery removableNon-removable-
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Talk time--
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Standby time--