Yezz Billy 4 vs vivo X9
Yezz Billy 4
vivo X9
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 900, 1800
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3G networkHSDPA 850, 1900HSDPA 850, 900, 1900, 2100; CDMA2000 1x & TD-SCDMA
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4G network-LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)
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HSDPA speed42.2 Mbps42.2 Mbps
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HSUPA speed5.76 Mbps5.76 Mbps
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LTE-A speed-LTE-A, (2CA) Cat6, 300 Mbps download, 50 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-62016-11
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Status2014-102016-11
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Design
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SIMDual SIM (Micro-SIM)Dual SIM (Nano-SIM, dual stand-by)
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Height122.5 mm152.6 mm
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Width64.4 mm74 mm
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Thickness9.9 mm7 mm
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Weight109 g154 g
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ColorsBlack, Blue, Champing Gold, Gun Metal, Red, White, YellowGold, Rose Gold
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Display
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Display typeTFT capacitive touchscreenSuper AMOLED capacitive touchscreen
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Physical size4.0 inches5.5 inches
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Resolution480 x 800 pixels1080 x 1920 pixels
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Pixel density233 ppi401 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 GHz ARM Cortex-A7Octa-core 2.0 GHz ARM Cortex-A53
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ChipsetQualcomm MSM8212 Snapdragon 200Qualcomm MSM8953 Snapdragon 625
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GPUAdreno 302Adreno 506
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Memory RAM512 MB4 GB
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Internal storage4 GB64, 128 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, v6.0.1 (Marshmallow)
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Main camera
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Main camera8 MP16 MP, f/2.0
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Primary camera resolution3264 x 2448 pixels-
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Primary camera video720p@30fps1080p@30fps
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Primary camera Autofocusautofocusphase detection autofocus
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Primary camera flashLED flashLED flash
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Camera featuresGeo-tagging, touch focusGeo-tagging, HDR, face detection, panorama, touch focus
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Selfie camera
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Selfie camera type-Dual
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Selfie camera1.3 MP20 MP, f/2.0 , 1/2.8"
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8 MP
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Selfie camera video-1080p
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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-No
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Radio FMStereo FM radio-
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Connectivity
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WLANWi-Fi 802.11a, 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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Bluetoothv4.0v4.2
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Bluetooth A2DPYesYes
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bluetooth LE-Yes
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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 IMIM-
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Messaging Push EmailPush EmailPush Email
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JavaNoNo
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SensorsAccelerometer, proximityFingerprint (front-mounted), 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 capacity1300 mAh3050 mAh
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Battery removable-Non-removable
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Fast battery charging-Yes
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Talk time 2G7 h-
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Talk time 3G4 h 30 min-
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Standby time 2G350 h-
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Standby time 3G300 h-