Karbonn Titanium Wind W4 vs Lava A51
Karbonn Titanium Wind W4
Lava A51
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Network
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2G networkGSM 900, 1800, 1900GSM 900, 1800
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3G networkHSDPA 2100HSDPA 900, 2100
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HSPA speedHSPAHSPA
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-92016-10
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Status2014-92016-10
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Design
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SIMDual SIMDual SIM
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Height125.1 mm136 mm
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Width64.3 mm66 mm
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Thickness11 mm9.9 mm
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Weight
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ColorsBlack, Red, WhiteBlack, Gold, Gray
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Display
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Display typeCapacitive touchscreenTFT capacitive touchscreen
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Physical size4.0 inches4.5 inches
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Resolution480 x 800 pixels480 x 854 pixels
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Pixel density233 ppi218 ppi
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Display colors1677721616777216
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Multitouch-Yes
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Hardware
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CPUQuad-core 1.2 GHzQuad-core 1.2 GHz
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Chipset-Spreadtrum SC7731C
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Memory RAM512 MB512 MB
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Internal storage4 GB8 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB32 GB
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OS
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OSMicrosoft Windows Phone 8.1Android OS, v6.0 (Marshmallow)
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Main camera
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Main camera5 MP5 MP
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Primary camera resolution2592 x 1944 pixels-
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Primary camera videovideovideo
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Primary camera Autofocusautofocus-
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Primary camera flashLED flashLED flash
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Camera featuresYesGeo-tagging, panorama
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Selfie camera
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Secondary cameraVGA cameraVGA camera
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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 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYesYes
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USBmicroUSB 2.0microUSB 2.0
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BluetoothYesv2.1
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Bluetooth EDR-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 EmailPush Email-
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JavaNoNo
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SensorsYesAccelerometer
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Browser
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HTMLYesHTML5
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1950 mAh1750 mAh
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Talk time8 h-
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Talk time 3G-10 h 30 min
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Standby time240 h-
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Standby time 3G-420 h
