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Asus Zenfone 4 Pro ZS551KL vs BLU Studio Touch

Compare recorded specifications, size and practical differences.

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    Key differences

    Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

    • Display technology

      OLED versus LCD

      Zenfone 4 Pro ZS551KL:
      OLED
      Studio Touch:
      LCD

    • Weight

      Studio Touch: 34 g lighter

      Zenfone 4 Pro ZS551KL:
      175 g
      Studio Touch:
      141 g

    • Width

      Studio Touch: 4.4 mm narrower

      Zenfone 4 Pro ZS551KL:
      75.6 mm
      Studio Touch:
      71.2 mm

    • Screen diagonal

      Studio Touch: 0.5 in smaller diagonal

      Zenfone 4 Pro ZS551KL:
      5.5 in
      Studio Touch:
      5 in

    • Chipset

      Zenfone 4 Pro ZS551KL:
      Qualcomm MSM8998 Snapdragon 835 (10 nm)
      Studio Touch:
      Mediatek MT6735P (28 nm)

    • Rear camera layout

      Zenfone 4 Pro ZS551KL:
      Dual
      Studio Touch:
      Single

    Physical size

    Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

    1. 1. Zenfone 4 Pro ZS551KL

      Height:
      156.9 mm +13.7 mm versus Studio Touch
      Width:
      75.6 mm +4.4 mm versus Studio Touch
      Depth:
      7.6 mm

    2. 2. Studio Touch

      Height:
      143.2 mm
      Width:
      71.2 mm
      Depth:
      8.4 mm +0.8 mm versus Zenfone 4 Pro ZS551KL

    Weight

    Bars start at zero and share a scale within this chart.

    1. 1. Zenfone 4 Pro ZS551KL

      175 g

      +34 g versus Studio Touch

    2. 2. Studio Touch

      141 g

    Screen size

    Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

    1. 1. Zenfone 4 Pro ZS551KL

      Screen diagonal:
      5.5 in
      Aspect ratio (height:width):
      16:9
      Approximate rectangular screen area:
      83.4 cm²

    2. 2. Studio Touch

      Screen diagonal:
      5 in
      Aspect ratio (height:width):
      16:9
      Approximate rectangular screen area:
      68.9 cm²

    Zenfone 4 Pro ZS551KL has approximately 21% more rectangular screen area than Studio Touch.

    Memory variants

    Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

    Recorded RAM for Zenfone 4 Pro ZS551KL, Studio Touch, compared at the same storage capacity.
    StorageZenfone 4 Pro ZS551KLStudio Touch
    8 GB Not recorded 1 GB RAM
    64 GB 6 GB RAM Not recorded
    128 GB 6 GB RAM Not recorded

    Practical features

    Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

    1. Zenfone 4 Pro ZS551KL

    NFC:
    Yes
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 512 GB (uses SIM 2 slot)

    2. Studio Touch

    NFC:
    Unknown
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 64 GB

    Battery capacity

    Capacity is not battery life. No endurance test is implied.

    Recorded battery capacity

    Bars start at zero and share a scale within this chart.

    1. 1. Zenfone 4 Pro ZS551KL

      3600 mAh

      +1100 mAh versus Studio Touch

    2. 2. Studio Touch

      2500 mAh

    Specifications

    Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

    1. Zenfone 4 Pro ZS551KL2. Studio Touch

    Everyday essentials
    Everyday essentials — specifications for Zenfone 4 Pro ZS551KL, Studio Touch.
    SpecificationZenfone 4 Pro ZS551KLStudio Touch
    Dimensions (HxWxD)
    • 156.9 Х 75.6 Х 7.6 mm
    • 143.2 Х 71.2 Х 8.4 mm
    Weight
    • 175 g
    • 141 g
    Technology
    • AMOLED
    • IPS LCD
    Screen size
    • 5.5" inch
    • 5" inch
    Screen resolution
    • 1080 x 1920 px
    • 720 x 1280 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 64/128 GB
    • 6 GB RAM
    • 8 GB
    • 1 GB RAM
    Memory card support
    • microSD
    • up to 512 GB (uses SIM 2 slot)
    • microSD
    • up to 64 GB
    Battery Capacity is not battery life. No endurance test is implied.
    • 3600 mAh
    • Non-removable Li-Ion
    • 2500 mAh
    • Non-removable Li-Po
    Operating system OS
    • Android 7.1.1 (Nougat)
    • upgradable to Android 8 (Oreo); ZenUI 4
    • Android 6.0 (Marshmallow)
    Chipset
    • Qualcomm MSM8998 Snapdragon 835 (10 nm)
    • Mediatek MT6735P (28 nm)
    NFC
    • Yes
    		 Unknown
    Headphone jack
    • Yes
    • Yes
    Display
    Display — specifications for Zenfone 4 Pro ZS551KL, Studio Touch.
    SpecificationZenfone 4 Pro ZS551KLStudio Touch
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors
    • 16M
    • 16M
    Screen area
    • 83.4 cm2
    • 68.9 cm2
    Screen format
    • 16:9 (height:width)
    • 16:9 (height:width)
    Screen to body ratio
    • 70.3%
    • 67.6%
    PPI /points per inch/
    • 401 PPI
    • 294 PPI
    Screen protection
    • Corning Gorilla Glass 5
    		 Unknown
    Camera and Video
    Camera and Video — specifications for Zenfone 4 Pro ZS551KL, Studio Touch.
    SpecificationZenfone 4 Pro ZS551KLStudio Touch
    Rear camera, main
    • 12 MP
    • Dual
    • 8 MP
    • Single
    Camera specs
    • 12 MP
    • f/1.7
    • 25mm (wide)
    • 1/2.55''
    • 1.4µm
    • 4-axis OIS
    • dual pixel PDAF & laser AF -16 MP
    • 50mm (telephoto)
    • 1/3.1''
    • 1.0µm
    • 2x optical zoom
    • AF
    • 8 MP
    • f/2.0
    • 1/4''
    • AF
    Functions
    • HDR
    • LED flash
    Video
    • 1080p@30fps
    • 1080p@30fps
    Front camera, selfie
    • 8 MP
    • Single
    • 5 MP
    • Single
    Specifications
    • 8 MP
    • f/1.9
    • 1/3.2''
    • 22mm (wide)
    • 1.4µm
    • PDAF
    • 5 MP
    Performance

    Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

    Performance — specifications for Zenfone 4 Pro ZS551KL, Studio Touch.
    SpecificationZenfone 4 Pro ZS551KLStudio Touch
    Processor CPU
    • Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)
    • Quad-core 1.0 GHz Cortex-A53
    Graphics processor GPU
    • Adreno 540
    • Mali-T720MP2
    GeekBench 4 Single Core * Unknown
    • 402
    GeekBench 4 Multi-Core * Unknown
    • 1164
    General specs
    General specs — specifications for Zenfone 4 Pro ZS551KL, Studio Touch.
    SpecificationZenfone 4 Pro ZS551KLStudio Touch
    Release date
    • 2017
    • August
    • 2016
    • June
    Colors
    • Moonlight White
    • Pure Black
    • Gold
    • Gray
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 390 EUR
    		 Unknown
    Battery life
    • Talking time- Up to 27 h 30 min (3G)
    • Stand by time- Up to 725 h (2G) / Up to 625 h (3G) Talking time- Up to 26 h (2G) / Up to 16 h (3G)
    Body build
    • Front/back glass (Gorilla Glass 5) & aluminum frame
    		 Unknown
    Communication and Connectivity
    Communication and Connectivity — specifications for Zenfone 4 Pro ZS551KL, Studio Touch.
    SpecificationZenfone 4 Pro ZS551KLStudio Touch
    SIM card
    • Hybrid Dual SIM (Nano-SIM
    • dual stand-by)
    • Dual SIM
    Network
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 -4G - LTE 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 band 1(2100)
    • 12(700)
    • 18(800)
    • 26(850)
    • 29(700)
    • 30(2300)
    • 41(2500) - US
    • Canada
    • Brazil LTE band 1(2100)
    • 41(2500) - India
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 1700(AWS) / 1900 / 2100 -4G - LTE band 2(1900)
    • 4(1700/2100)
    • 7(2600)
    • 12(700)
    • 17(700)
    Speed
    • HSPA 42.2/5.76 Mbps
    • LTE-A (3CA) Cat12 600/150 or 100 Mbps
    • HSPA 42.2/11.5 Mbps
    • LTE Cat4 150/50 Mbps
    GPRS
    • Yes
    • Class 12
    Edge
    • Yes
    • Class 12
    Wi-Fi
    • Wi-Fi 802.11 a/b/g/n/ac
    • dual-band
    • WiFi Direct
    • hotspot
    • Wi-Fi 802.11 b/g/n
    • Wi-Fi Direct
    • hotspot
    GPS
    • Yes
    • with A-GPS
    • GLONASS
    • BDS
    • GALILEO
    • Yes
    • with A-GPS
    USB
    • Type-C 1.0 reversible connector
    • microUSB 2.0
    Bluetooth
    • 5.0
    • A2DP
    • EDR
    • LE
    • aptX
    • 4.0
    • A2DP
    Music and Audio
    Music and Audio — specifications for Zenfone 4 Pro ZS551KL, Studio Touch.
    SpecificationZenfone 4 Pro ZS551KLStudio Touch
    Radio
    • FM radio
    • FM radio
    Others
    • 24-bit/192kHz audio -DTS sound -Active noise cancellation with dedicated mic
    		 Unknown
    Other features
    Other features — specifications for Zenfone 4 Pro ZS551KL, Studio Touch.
    SpecificationZenfone 4 Pro ZS551KLStudio Touch
    Dop
    • Sensors Fingerprint (front-mounted)
    • accelerometer
    • gyro
    • proximity
    • compass
    • color spectrum
    • Infrared port - Fast battery charging: 50% in 32 min
    • Sensors Fingerprint (front-mounted)
    • accelerometer
    • proximity

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