verykool R28 Denali vs vivo Y31
verykool R28 Denali
vivo Y31
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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 850, 1700(AWS), 1900HSDPA 850, 900, 2100
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HSDPA speed7.2 Mbps-
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HSUPA speed5.76 Mbps-
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HSPA speed-HSPA
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2015-82015-9
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Status2015-82015-10
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Design
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SIMDual SIM (Mini-SIM/ Micro-SIM)Dual SIM
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Height132 mm137.2 mm
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Width48.5 mm68.8 mm
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Thickness15 mm8.4 mm
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Weight127 g137 g
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ColorsBlackBlack, White
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Display
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Display typeTFTIPS LCD capacitive touchscreen
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Physical size2.4 inches4.7 inches
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Resolution240 x 320 pixels720 x 1280 pixels
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Pixel density167 ppi312 ppi
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Display colors6656016777216
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Hardware
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CPU611 MHz1.3 GHz Quad-core
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Chipset-Mediatek MT6580
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Memory RAM-1 GB
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Internal storage-8 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB128 GB
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Main camera
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Main camera5 MP8 MP
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Primary camera resolution2592 x 1944 pixels3264 x 2448 pixels
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Primary camera videovideovideo
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Primary camera flash-LED flash
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Camera featuresYesGeo-tagging, HDR, touch focus
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Selfie camera
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Secondary cameraNo-
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Selfie camera2 MP
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Sound
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3.5mm jackNoYes
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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 FMStereo FM radioFM radio
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Radio antennabuilt-in antenna-
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Connectivity
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WLANWi-Fi
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv3.0Yes
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Bluetooth A2DPYes-
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GPSNoYes, with A-GPS
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Features
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Messaging SMSSMSSMS(threaded view)
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Messaging MMSMMSMMS
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Messaging EmailEmailEmail
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Messaging IM-IM
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Messaging Push Mail-Push Mail
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JavaNoNo
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Sensors-Accelerometer, compass, proximity
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Browser
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HTML-HTML5
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BrowserNo-
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity1400 mAh2100 mAh
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Talk time--
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Talk time 3G7 h-
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Standby time--
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Standby time 3G240 h-
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OS
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OS-Android OS, v5.1 (Lollipop)