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Asus Zenfone 2 ZE551ML vs BLU Studio X9 HD

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.

    • Weight

      Studio X9 HD: 26 g lighter

      Zenfone 2 ZE551ML:
      170 g
      Studio X9 HD:
      144 g

    • Width

      Studio X9 HD: 4.2 mm narrower

      Zenfone 2 ZE551ML:
      77.2 mm
      Studio X9 HD:
      73 mm

    • Screen diagonal

      Studio X9 HD: 0.5 in smaller diagonal

      Zenfone 2 ZE551ML:
      5.5 in
      Studio X9 HD:
      5 in

    • Chipset

      Zenfone 2 ZE551ML:
      Intel Atom Z3580 (4 GB RAM model) -Intel Atom Z3560 (2 GB RAM model)
      Studio X9 HD:
      Mediatek MT6580 (28 nm)

    • Depth

      Studio X9 HD: 0.8 mm thinner

      Zenfone 2 ZE551ML:
      10.9 mm
      Studio X9 HD:
      10.1 mm

    • Height

      Studio X9 HD: 9.5 mm shorter

      Zenfone 2 ZE551ML:
      152.5 mm
      Studio X9 HD:
      143 mm

    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 2 ZE551ML

      Height:
      152.5 mm +9.5 mm versus Studio X9 HD
      Width:
      77.2 mm +4.2 mm versus Studio X9 HD
      Depth:
      10.9 mm +0.8 mm versus Studio X9 HD

    2. 2. Studio X9 HD

      Height:
      143 mm
      Width:
      73 mm
      Depth:
      10.1 mm

    Weight

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

    1. 1. Zenfone 2 ZE551ML

      170 g

      +26 g versus Studio X9 HD

    2. 2. Studio X9 HD

      144 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 2 ZE551ML

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

    2. 2. Studio X9 HD

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

    Zenfone 2 ZE551ML has approximately 21% more rectangular screen area than Studio X9 HD.

    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 2 ZE551ML, Studio X9 HD, compared at the same storage capacity.
    StorageZenfone 2 ZE551MLStudio X9 HD
    8 GB Unknown 1 GB RAM
    Zenfone 2 ZE551ML: Original memory entry

    16/32/64 GB · 2/4 GB RAM

    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 2 ZE551ML

    NFC:
    Yes
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 256 GB (dedicated slot)

    2. Studio X9 HD

    NFC:
    Unknown
    Headphone jack:
    Yes
    Memory card support:
    See details microSDXC

    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 2 ZE551ML

      3000 mAh

      +1000 mAh versus Studio X9 HD

    2. 2. Studio X9 HD

      2000 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 2 ZE551ML2. Studio X9 HD

    Everyday essentials
    Everyday essentials — specifications for Zenfone 2 ZE551ML, Studio X9 HD.
    SpecificationZenfone 2 ZE551MLStudio X9 HD
    Dimensions (HxWxD)
    • 152.5 Х 77.2 Х 10.9 mm
    • 143 Х 73 Х 10.1 mm
    Weight
    • 170 g
    • 144 g
    Technology
    • IPS LCD
    • 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.
    • 16/32/64 GB
    • 2/4 GB RAM
    • 8GB 1GB RAM
    Memory card support
    • microSD
    • up to 256 GB (dedicated slot)
    • microSDXC
    Battery Capacity is not battery life. No endurance test is implied.
    • 3000 mAh
    • Non-removable Li-Po
    • 2000 mAh
    • Li-Ion
    Operating system OS
    • Android 5.0 (Lollipop)
    • upgradable to 6.0 (Marshmallow)
    • Android 8.1 Oreo (Go edition)
    Chipset
    • Intel Atom Z3580 (4 GB RAM model) -Intel Atom Z3560 (2 GB RAM model)
    • Mediatek MT6580 (28 nm)
    NFC
    • Yes
    		 Unknown
    Headphone jack
    • Yes
    • Yes
    Display
    Display — specifications for Zenfone 2 ZE551ML, Studio X9 HD.
    SpecificationZenfone 2 ZE551MLStudio X9 HD
    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
    • 70.8%
    • 66.0%
    PPI /points per inch/
    • 401 PPI
    • 294 PPI
    Screen protection
    • Corning Gorilla Glass 3
    		 Unknown
    Camera and Video
    Camera and Video — specifications for Zenfone 2 ZE551ML, Studio X9 HD.
    SpecificationZenfone 2 ZE551MLStudio X9 HD
    Rear camera, main
    • 13 MP
    • Single
    • 8 MP
    • Single
    Camera specs
    • 13 MP
    • AF
    • f/2.0
    • 8 MP
    Functions
    • Dual-LED dual-tone flash
    • panorama
    • HDR
    • LED flash
    Video
    • 1080p@30fps
    • 720p@30fps
    Front camera, selfie
    • 5 MP
    • Single
    • 5 MP
    • Single
    Specifications
    • 5 MP
    • f/2.0
    • 5 MP
    Performance

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

    Performance — specifications for Zenfone 2 ZE551ML, Studio X9 HD.
    SpecificationZenfone 2 ZE551MLStudio X9 HD
    Processor CPU
    • Quad-core 2.3 GHz (4 GB RAM model) -Quad-core 1.8 GHz (2 GB RAM model)
    • Quad-core 1.3 GHz Cortex-A7
    Graphics processor GPU
    • PowerVR G6430
    • Mali-400MP2
    Antutu 7 score *
    • 50232
    		 Unknown
    General specs
    General specs — specifications for Zenfone 2 ZE551ML, Studio X9 HD.
    SpecificationZenfone 2 ZE551MLStudio X9 HD
    Release date
    • 2015
    • January
    • 2020
    • March 25
    Colors
    • Osmium Black
    • Sheer Gold
    • Glacier Gray
    • Glamor Red
    • Ceramic White
    • Black
    • White
    • Blue
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 300 EUR
    • 50 USD
    Battery life Unknown
    • Stand by time- Up to 500 h (3G) Talking time- Up to 15 h (3G)
    Body build
    • plastic body
    		 Unknown
    Communication and Connectivity
    Communication and Connectivity — specifications for Zenfone 2 ZE551ML, Studio X9 HD.
    SpecificationZenfone 2 ZE551MLStudio X9 HD
    SIM card
    • Dual SIM (Micro-SIM
    • dual stand-by)
    • Dual SIM (Nano-SIM
    • dual stand-by)
    Network
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 TD-SCDMA - China & India -4G - LTE band 1(2100)
    • 2(1900)
    • 3(1800)
    • 4(1700/2100)
    • 5(850)
    • 8(900)
    • 9(1800)
    • 18(800)
    • 19(800)
    • 28(700) - Taiwan LTE band 1(2100)
    • 7(2600)
    • 20(800) - Global LTE band 1(2100)
    • 17(700)
    • 20(800) - US LTE band 1(2100)
    • 38(2600)
    • 39(1900)
    • 40(2300)
    • 41(2500) - China & India
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
    Speed
    • HSPA 42.2/5.76 Mbps
    • LTE Cat4 150/50 Mbps
    • HSPA 21.1/5.76 Mbps
    GPRS
    • Yes
    • Yes
    Edge
    • Yes
    • Yes
    Wi-Fi
    • Wi-Fi 802.11 a/b/g/n/ac
    • Wi-Fi Direct
    • hotspot
    • Wi-Fi 802.11 b/g/n
    • Wi-Fi Direct
    • hotspot
    GPS
    • Yes
    • with A-GPS
    • GLONASS
    • Yes
    • with A-GPS
    USB
    • microUSB 2.0
    • USB Host
    • microUSB 2.0
    Bluetooth
    • 4.0
    • A2DP
    • EDR
    • 4.0
    • A2DP
    Harmful irradiation
    • SAR EU - 0.35 W/kg (head)
    		 Unknown
    Music and Audio
    Music and Audio — specifications for Zenfone 2 ZE551ML, Studio X9 HD.
    SpecificationZenfone 2 ZE551MLStudio X9 HD
    Radio
    • FM radio
    • RDS
    • FM radio
    Other features
    Other features — specifications for Zenfone 2 ZE551ML, Studio X9 HD.
    SpecificationZenfone 2 ZE551MLStudio X9 HD
    Dop
    • Sensors Accelerometer
    • gyro
    • proximity
    • compass - Fast battery charging: 60% in 40 min
    • Sensors Accelerometer For USA

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