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    ZenFone 4 Pro (ZS551KL)

    ZenFone 4 Pro (ZS551KL)
    Finish / Color

    Moonlight White, Pure Black

    Capacity

    Internal storage

    UFS 2.1 64GB / 128GB

    MicroSD card

    Supports up to 2TB

    Google Drive

    100GB free space (1 year)

    Weight and Dimensions
    156.9mm
    (6.17 inches)
    75.6mm
    (2.97 inches)
    7.6mm
    (0.30 inches)

    Weight: 175 grams (6.17 ounces)

    Display

    5.5-inch Full HD (1920 by 1080) AMOLED display

    500nits brightness

    Over 100% NTSC high color gamut display

    Front and rear strong 2.5D Corning® Gorilla® Glass

    2.1mm slim bezel

    Bluelight filter for eye care

    Capacitive touch panel with 10 points multi-touch (support glove touch)

    Smudge-resistant oleophobic coating

    Processor

    CPU: Qualcomm® Snapdragon™ 835 Mobile Platform with 10nm, 64-bit Octa-core Processor
    FinFET LPP (Low Power Plus) powersaving technology

    GPU: Qualcomm® Adreno™ 540

    Memory

    LPDDR4x 6GB

    Main Rear Camera

    8x light sensitivity low light photos (compared with a typical camera with 16 megapixels, F1.7 & 1.12µm pixel size)

    ASUS SuperPixel™ Engine - exclusive image processor

    Sony flagship IMX362 12 megapixels dual pixel image sensor - 1/2.55" large sensor size, 1.4µm large pixel size

    F1.7 aperture

    25mm equivalent focal length in 35mm film camera

    6p lens

    83° field of view

    0.03 seconds TriTech+™ technology - Dual Pixel PDAF, laser auto-focus, subject-tracking auto-focus

    4-axis, 4-stop optical image stabilization

    Color correction (RGB) sensor

    LED flash

    PixelMaster camera modes:

    Auto (with low light and HDR features)

    Beauty

    Portrait

    Pro (RAW file support / up to 32 seconds long exposure)

    Super Resolution (48 megapixels)

    GIF Animation

    Panorama

    Slow Motion

    Time Lapse (with power saving)

    9 various filters

    Second Rear Camera

    16 megapixels

    Sony IMX351 image sensor

    2x optical zoom, 10x total zoom

    50mm equivalent focal length in 35mm film camera

    Video Recording

    4K UHD (3840 by 2160) video recording at 30 fps for rear camera's shake-free videos

    1080p FHD video recording at 30 / 60 fps

    720p HD video recording at 30 fps

    3-axis electronic image stabilization for selfie and rear cameras

    Slow Motion video (1080p at 120 fps / 720p at 240 fps)

    Take still photo while recording video

    Front Camera

    8 megapixels

    Sony IMX319 image sensor

    1.4µm large pixel size

    F1.9 aperture

    ASUS SuperPixel™ Engine - exclusive image processor

    22mm equivalent focal length in 35mm film camera

    87.4° field of view

    Phase detection auto-focus

    PixelMaster camera modes:

    Auto (with low light and HDR features)

    Beauty

    Portrait

    Selfie Panorama

    GIF Animation

    9 various filters

    Audio

    Speaker

    Dual speakers

    5-magnet speaker with TI Smart Amp for louder, deeper and less distorted sound effect

    Audio Output

    Hi-Res audio 192kHz/24-bit standard that is 4 times better than CD quality

    DTS (Digital Theater System) Headphone:X™ 7.1 virtual surround sound for headphone support

    Audio CODEC

    Microphone

    Three internal microphones with ASUS Noise Reduction Technology

    FM Receiver

    FM radio

    Wireless Technology

    WLAN 802.11 a/b/g/n/ac

    802.11ac Wi-Fi with 2x2 MIMO (DL 866 Mbps)

    Bluetooth 5.0

    Wi-Fi direct

    NFC

    Navigation

    GPS, AGPS, GLO, BDS, GAL

    SIM Cards

    Dual SIM dual standby

    Slot 1: 2G/3G/4G Nano SIM card

    Slot 2: 2G/3G/4G Nano SIM Card, or the MicroSD card (supports up to 2TB) at a time

    Both SIM card slots support 3G WCDMA / 4G LTE network band. But only one SIM card can connect to 3G WCDMA / 4G LTE service at a time.

    Network Standard

    FDD-LTE, TD-LTE, WCDMA/HSPA+/DC-HSPA+, GSM/GPRS/EDGE

    Data rate

    LTE Cat12: UL 100 Mbps / DL 600 Mbps (TW/WW version)

    LTE Cat12: UL 150 Mbps / DL 600 Mbps (US/CA/BR/CO/JP/IN version)

    LTE 3CA 4x4 MIMO support (varies by region)

    DC-HSPA+: UL 5.76 / DL 42 Mbps

    TW/WW

    DC-HSPA+: UL 5.76 / DL 42 Mbps

    FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 17,19, 20, 28)

    TD-LTE (Bands 38, 39, 40, 41 (2545~2655MHz))

    WCDMA (Bands 1, 2, 3, 4, 5, 6, 8, 19)

    EDGE/GPRS/GSM (850, 900, 1800, 1900MHz)

    US/CA/BR/CO

    FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 29, 30)

    TD-LTE (Bands 38, 39, 41)

    WCDMA (Bands 1, 2, 3, 4, 5, 6, 8, 19)

    EDGE/GPRS/GSM (850, 900, 1800, 1900MHz)

    JP/IN

    FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 29, 30)

    TD-LTE (Bands 38, 39, 40, 41)

    WCDMA (Bands 1, 2, 3, 4, 5, 6, 8, 19)

    EDGE/GPRS/GSM (850, 900, 1800, 1900MHz)

    ASUS phone 4G/LTE band compatibility varies by region, please check compatibility with local carriers.

    Sensor

    Live fingerprint sensor (0.3 seconds unlock, supports 5 fingerprints), Accelerator, E-Compass, Gyroscope, Proximity sensor, Ambient light sensor, RGB sensor, Laser sensor

    External Buttons and Connectors
    Live fingerprint sensor On/Off
    Sleep/Wake
    Volume up/down 3.5mm audio jack
    (1 Headphone/Mic-in)
    Built-in speaker USB-C connector
    Battery

    3600mAh with fast charging

    5 minutes charge for 2 hours talk time

    32 minutes charge to 50% capacity

    Up to 27.5 hours 3G talk time

    Up to 21 hours 720p video playback

    Up to 17 hours Wi-Fi web browsing

    Power Adapter

    Output: 9V 2A 18W

    Operating System

    Android™ N with new ASUS ZenUI 4.0

    ASUS ZenUI 4.0 includes:

    Launcher
    Themes
    ZenUI Safeguard
    Fingerprint Sensor
    ZenMotion
    Gallery
    SelfieMaster
    File Manager
    Weather
    Game Genie
    Camera
    Clock
    Calculator
    Mobile Manager
    Keyboard
    Phone
    Contacts
    Page Marker
    Always on panel
    AudioWizard
    In the Box

    ZenFone 4 Pro with Android™ N and new ASUS ZenUI 4.0

    ASUS ZenEar Pro earphone with microphone

    Type-C USB cable

    Ejector pin (SIM tray needle)

    USB power adapter (18W)

    Documentation (user guide, warranty card)

    Clear soft bumper (optional)

    Note

    Specifications and contents may vary by region.