Yezz Billy 4 vs ZTE Grand S Flex
Yezz Billy 4
ZTE Grand S Flex
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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, 1900HSDPA
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4G network-LTE
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HSDPA speed42.2 MbpsHSDPA
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HSUPA speed5.76 MbpsHSUPA
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-62013-11
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Status2014-102013-11
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Design
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SIMDual SIM (Micro-SIM)Yes
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Height122.5 mm143 mm
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Width64.4 mm70 mm
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Thickness9.9 mm8.9 mm
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Weight109 g130 g
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ColorsBlack, Blue, Champing Gold, Gun Metal, Red, White, YellowBlack/Silver
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Display
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Display typeTFT capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size4.0 inches5.0 inches
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Resolution480 x 800 pixels720 x 1280 pixels
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Pixel density233 ppi294 ppi
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Display colors1677721616777216
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Hardware
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CPUQuad-core 1.2 GHz ARM Cortex-A7Dual-core 1.2 GHz Krait
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ChipsetQualcomm MSM8212 Snapdragon 200Qualcomm MSM8930 Snapdragon
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GPUAdreno 302-
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Memory RAM512 MB1 GB
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Internal storage4 GB16 GB
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Memory cardmicroSD
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Memory card max128 GB-
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OS
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OSMicrosoft Windows Phone 8.1Android OS, v4.1 (Jelly Bean)
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Main camera
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Main camera8 MP8 MP
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Primary camera resolution3264 x 2448 pixels3264 x 2448 pixels
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Primary camera video720p@30fps1080p@30fps
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Primary camera Autofocusautofocusautofocus
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Primary camera flashLED flashLED flash
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Camera featuresGeo-tagging, touch focus-
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Selfie camera
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Selfie camera1.3 MP1 MP
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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 FMStereo FM radioFM radio
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11nWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYesYes
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WLAN DLNA-Yes
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0v4.0
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Bluetooth A2DPYesYes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYes-
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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 EmailPush Email
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JavaNoYes, via Java MIDP emulator
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SensorsAccelerometer, proximity-
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Browser
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HTMLHTML5Yes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1300 mAh2300 mAh
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Talk time-3 h
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Talk time 2G7 h-
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Talk time 3G4 h 30 min-
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Standby time-250 h
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Standby time 2G350 h-
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Standby time 3G300 h-