Lava A51 vs vivo X3S
Lava A51
vivo X3S
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Network
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2G networkGSM 900, 1800GSM 850, 900, 1800, 1900
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3G networkHSDPA 900, 2100HSDPA 850, 900, 2100
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HSDPA speed-21.1 Mbps
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HSUPA speed-5.76 Mbps
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HSPA speedHSPA-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2016-102015-3
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Status2016-102015-3
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Design
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SIMDual SIMDual SIM (Micro-SIM/Nano-SIM, dual stand-by)
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Height136 mm143.3 mm
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Width66 mm71 mm
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Thickness9.9 mm6 mm
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Weight150 g
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ColorsBlack, Gold, GrayBlue, White
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Display
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Display typeTFT capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size4.5 inches5.0 inches
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Resolution480 x 854 pixels720 x 1280 pixels
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Pixel density218 ppi294 ppi
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Display colors1677721616777216
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MultitouchYes-
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Hardware
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CPUQuad-core 1.2 GHzOcta-core 1.7 GHz ARM Cortex-A7
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ChipsetSpreadtrum SC7731CMediatek MT6592
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GPU-Mali-450MP4
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Internal storage8 GB16 GB
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Memory RAM512 MB1 GB
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Memory cardmicroSD
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Memory card max32 GB-
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OS
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OSAndroid OS, v6.0 (Marshmallow)Android OS, v4.2.2 (Jelly Bean)
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Main camera
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Main camera5 MP13 MP
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Primary camera resolution-4160 x 3120 pixels
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Primary camera videovideo1080p@30fps
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Primary camera Autofocus-autofocus
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Primary camera flashLED flashLED flash
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Camera featuresGeo-tagging, panoramaGeo-tagging, face/smile detection, touch focus
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Selfie camera
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Secondary cameraVGA cameraYes
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration; MP3, WAV 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 802.11b, 802.11g, 802.11nWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
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WLAN WiFi HotspotYesYes
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WLAN WiFi Direct-Yes
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WLAN WiFi Dual Band-Yes
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USBmicroUSB 2.0microUSB 2.0
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USB host-Yes
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Bluetoothv2.1v4.0
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Bluetooth A2DP-Yes
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Bluetooth EDRYesYes
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Infrared-Yes
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GPSYes, with A-GPSYes, with A-GPS
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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 Email-Push Mail
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JavaNoYes, via Java MIDP emulator
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SensorsAccelerometerAccelerometer, compass, gyro, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity1750 mAh2000 mAh
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Battery removable-Non-removable
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Talk time 2G-14 h
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Talk time 3G10 h 30 min11 h
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Standby time 2G-450 h
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Standby time 3G420 h450 h