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Asus Zenfone 3 Ultra ZU680KL vs BLU Studio J8

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 J8: 50 g lighter

      Zenfone 3 Ultra ZU680KL:
      233 g
      Studio J8:
      183 g

    • Width

      Studio J8: 16.3 mm narrower

      Zenfone 3 Ultra ZU680KL:
      93.9 mm
      Studio J8:
      77.6 mm

    • Screen diagonal

      Studio J8: 1.3 in smaller diagonal

      Zenfone 3 Ultra ZU680KL:
      6.8 in
      Studio J8:
      5.5 in

    • Chipset

      Zenfone 3 Ultra ZU680KL:
      Qualcomm MSM8976 Snapdragon 652 (28 nm)
      Studio J8:
      Mediatek MT6580 (28 nm)

    • Depth

      Zenfone 3 Ultra ZU680KL: 2.1 mm thinner

      Zenfone 3 Ultra ZU680KL:
      6.8 mm
      Studio J8:
      8.9 mm

    • Height

      Studio J8: 30.7 mm shorter

      Zenfone 3 Ultra ZU680KL:
      186.4 mm
      Studio J8:
      155.7 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 3 Ultra ZU680KL

      Height:
      186.4 mm +30.7 mm versus Studio J8
      Width:
      93.9 mm +16.3 mm versus Studio J8
      Depth:
      6.8 mm

    2. 2. Studio J8

      Height:
      155.7 mm
      Width:
      77.6 mm
      Depth:
      8.9 mm +2.1 mm versus Zenfone 3 Ultra ZU680KL

    Weight

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

    1. 1. Zenfone 3 Ultra ZU680KL

      233 g

      +50 g versus Studio J8

    2. 2. Studio J8

      183 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 3 Ultra ZU680KL

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

    2. 2. Studio J8

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

    Zenfone 3 Ultra ZU680KL has approximately 52.9% more rectangular screen area than Studio J8.

    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 3 Ultra ZU680KL, Studio J8, compared at the same storage capacity.
    StorageZenfone 3 Ultra ZU680KLStudio J8
    8 GB Unknown 1 GB RAM
    Zenfone 3 Ultra ZU680KL: Original memory entry

    32/64/128 GB · 3/4 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 3 Ultra ZU680KL

    NFC:
    Unknown
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 256 GB (uses SIM 2 slot)

    2. Studio J8

    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 3 Ultra ZU680KL

      4600 mAh

      +2100 mAh versus Studio J8

    2. 2. Studio J8

      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 3 Ultra ZU680KL2. Studio J8

    Everyday essentials
    Everyday essentials — specifications for Zenfone 3 Ultra ZU680KL, Studio J8.
    SpecificationZenfone 3 Ultra ZU680KLStudio J8
    Dimensions (HxWxD)
    • 186.4 Х 93.9 Х 6.8 mm
    • 155.7 Х 77.6 Х 8.9 mm
    Weight
    • 233 g
    • 183 g
    Technology
    • IPS LCD
    • IPS LCD
    Screen size
    • 6.8" inch
    • 5.5" 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.
    • 32/64/128 GB
    • 3/4 GB RAM
    • 8 GB
    • 1 GB RAM
    Memory card support
    • microSD
    • up to 256 GB (uses SIM 2 slot)
    • microSD
    • up to 64 GB
    Battery Capacity is not battery life. No endurance test is implied.
    • 4600 mAh
    • Non-removable Li-Ion
    • 2500 mAh
    • Non-removable Li-Po
    Operating system OS
    • Android 6.1 (Marshmallow); ZenUI 3
    • Android 7.0 (Nougat)
    Chipset
    • Qualcomm MSM8976 Snapdragon 652 (28 nm)
    • Mediatek MT6580 (28 nm)
    Headphone jack
    • Yes
    • Yes
    Display
    Display — specifications for Zenfone 3 Ultra ZU680KL, Studio J8.
    SpecificationZenfone 3 Ultra ZU680KLStudio J8
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors
    • 16M
    • 16M
    Screen area
    • 127.5 cm2
    • 83.4 cm2
    Screen format
    • 16:9 (height:width)
    • 16:9 (height:width)
    Screen to body ratio
    • 72.8%
    • 69.0%
    PPI /points per inch/
    • 324 PPI
    • 267 PPI
    Screen protection
    • Corning Gorilla Glass 4
    		 Unknown
    Camera and Video
    Camera and Video — specifications for Zenfone 3 Ultra ZU680KL, Studio J8.
    SpecificationZenfone 3 Ultra ZU680KLStudio J8
    Rear camera, main
    • 23 MP
    • Single
    • 8 MP
    • Single
    Camera specs
    • 23 MP
    • f/2.0
    • 1/2.6''
    • 1.0µm
    • 4-axis OIS
    • PDAF & laser AF
    • 8 MP
    Functions
    • Dual-LED dual-tone flash
    • HDR
    • panorama
    • LED flash
    Video
    • 1080p@30fps
    • 1080p@30fps
    Front camera, selfie
    • 8 MP
    • Single
    • 5 MP
    • Single
    Specifications
    • 8 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 3 Ultra ZU680KL, Studio J8.
    SpecificationZenfone 3 Ultra ZU680KLStudio J8
    Processor CPU
    • Octa-core (4x1.8 GHz Cortex-A72 & 4x1.4 GHz Cortex-A53)
    • Quad-core 1.3 GHz Cortex-A7
    Graphics processor GPU
    • Adreno 510
    • Mali-400MP2
    GeekBench 4 Single Core *
    • 1357
    		 Unknown
    GeekBench 4 Multi-Core *
    • 3659
    		 Unknown
    GeekBench 4 RenderScript *
    • 4146
    		 Unknown
    GeekBench 5 Single Core *
    • 252
    		 Unknown
    GeekBench 5 Multi-Core *
    • 899
    		 Unknown
    General specs
    General specs — specifications for Zenfone 3 Ultra ZU680KL, Studio J8.
    SpecificationZenfone 3 Ultra ZU680KLStudio J8
    Release date
    • 2016
    • May
    • 2017
    • July
    Colors
    • Glacier Silver
    • Titanium Gray
    • Metallic Pink
    • Black
    • Gold
    • Rose Gold
    • Silver
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 300 EUR
    		 Unknown
    Battery life
    • Talking time- Up to 34 h (3G)
    • Stand by time- Up to 725 h (2G) / Up to 625 h (3G) Talking time- Up to 22 h (2G) / Up to 16 h (3G)
    Communication and Connectivity
    Communication and Connectivity — specifications for Zenfone 3 Ultra ZU680KL, Studio J8.
    SpecificationZenfone 3 Ultra ZU680KLStudio J8
    SIM card
    • Hybrid Dual SIM (Nano-SIM
    • dual stand-by)
    • Dual SIM (Nano-SIM/ Micro-SIM)
    Network
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 / 800 -4G - LTE band 1(2100)
    • 3(1800)
    • 5(850)
    • 7(2600)
    • 8(900)
    • 18(800)
    • 19(800)
    • 20(800)
    • 26(850)
    • 28(700)
    • 38(2600)
    • 40(2300)
    • 41(2500)
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
    Speed
    • HSPA 42.2/5.76 Mbps
    • LTE-A (2CA) Cat6 300/50 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
    • BDS
    • Yes
    • with A-GPS
    USB
    • 2.0
    • Type-C 1.0 reversible connector
    • USB On-The-Go
    • microUSB 2.0
    • USB Host
    Bluetooth
    • 4.2
    • A2DP
    • EDR
    • LE
    • 4.1
    • A2DP
    • LE
    Music and Audio
    Music and Audio — specifications for Zenfone 3 Ultra ZU680KL, Studio J8.
    SpecificationZenfone 3 Ultra ZU680KLStudio J8
    Radio
    • FM radio
    • FM radio
    Others
    • 24-bit/192kHz audio
    		 Unknown
    Other features
    Other features — specifications for Zenfone 3 Ultra ZU680KL, Studio J8.
    SpecificationZenfone 3 Ultra ZU680KLStudio J8
    Dop
    • Sensors Fingerprint (front-mounted)
    • accelerometer
    • gyro
    • proximity
    • compass - Fast battery charging: 60% in 45 min (Quick Charge 3.0)
    • Sensors Fingerprint (rear-mounted)
    • accelerometer
    • proximity