Asus Zenfone 4 Pro ZS551KL vs ZTE Grand X4
Asus Zenfone 4 Pro ZS551KL
ZTE Grand X4
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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 800, 850, 900, 1700(AWS), 1800, 1900, 2100HSDPA 850, 900, 1900, 2100
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4G networkLTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 19(800), 20(800), 28(700), 38(2600), 39(1900), 40(2300), 41(2500) - Global, Taiwan; LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 20(800), 26(850), 28(700), 29(700), 30(2300), 38(2600), 39(1900), 41(2500) - US, Canada, Brazil; LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 20(800), 26(850), 28(700), 29(700), 30(2300), 38(2600), 39(1900), 40(2300), 41(2500) - IndiaLTE
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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 speed-LTE, Cat4, 150 Mbps download, 50 Mbps upload
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LTE-A speedLTE-A, (3CA) Cat12, 600 Mbps download, 150 Mbps upload-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2017-82016-9
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Status2017-102016-9
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Design
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SIMHybrid Dual SIM (Nano-SIM, dual stand-by)Nano-SIM
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Height156.9 mm155.2 mm
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Width75.6 mm77 mm
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Thickness7.6 mm9.1 mm
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Weight175 g162 g
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ColorsMoonlight white, Pure BlackBlack
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Display
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Display typeAMOLED capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size5.5 inches5.5 inches
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Resolution1080 x 1920 pixels720 x 1280 pixels
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Pixel density401 ppi267 ppi
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Display colors1677721616777216
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ProtectionCorning Gorilla Glass 5Corning Gorilla Glass 3
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MultitouchYes, max 10 fingersYes
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Hardware
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CPUOcta-core-
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CPUQuad-core 2.45 GHz KryoQuad-core 1.4 GHz Cortex-A53 ARM
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CPU(second)quad-core 1.9 GHz Kryo
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ChipsetQualcomm MSM8998 Snapdragon 835Qualcomm MSM8917 Snapdragon 425
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GPUAdreno 540Adreno 308
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Memory RAM6 GB2 GB
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Internal storage64, 128 GB16 GB
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Memory cardmicroSD(uses second SIM slot)microSD
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Memory card max256 GB128 GB
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OS
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OSAndroid 7.1.1 (Nougat)Android OS, v6.0.1 (Marshmallow)
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Main camera
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Camera typeDual-
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Main camera12 MP, f/1.7 , 25 mm, 2x optical zoom13 MP
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16 MP, 50 mm
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Primary camera video2160p@30fps, 1080p@30/60fps, 1080p@120fps, 720p@240fps1080p@30fps
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Primary camera Autofocuslaser/phase detection autofocusautofocus
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Primary camera flashLED flashLED flash
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Primary camera optical image stabilization4-axis optical image stabilization-
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Camera features25mm (1/2.55" sensor size, 1.4 µm pixel size), 50mm (1/3.1" sensor size, 1.0 µm pixel size), geo-tagging, touch focus, face detection, HDR, panoramaGeo-tagging, HDR, face detection, panorama, touch focus
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Selfie camera
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Selfie camera8 MP, f/1.9 , 22 mm, 1.4 µm5 MP
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Selfie camera video1080p-
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Sound
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3.5mm jackYesYes
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LoudspeakerYes, dual speakersYes
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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 802.11a, 802.11b, 802.11g, 802.11n, 802.11acWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYesYes
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WLAN WiFi Dual BandYes-
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USBType-C reversible connectorType-C reversible connector
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Bluetoothv5.0v4.2
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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Bluetooth EDRYes-
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Bluetooth AptXYes-
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InfraredYes-
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NFCYes-
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYes-
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GALILEOYes-
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BDSYes-
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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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JavaNoNo
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SensorsFingerprint (front-mounted), accelerometer, color spectrum, compass, gyro, proximityFingerprint (rear-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 capacity3600 mAh3140 mAh
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Battery removableNon-removableNon-removable
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Fast battery charging50% in 32 min-
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Talk time 3G27 h 30 min26 h
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Standby time 3G-715 h
