Asus Zenfone 3 Ultra ZU680KL vs Celkon A403

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

    A403: 120 g lighter

    Zenfone 3 Ultra ZU680KL:
    233 g
    A403:
    113 g
  • Width

    A403: 28.9 mm narrower

    Zenfone 3 Ultra ZU680KL:
    93.9 mm
    A403:
    65 mm
  • Screen diagonal

    A403: 2.8 in smaller diagonal

    Zenfone 3 Ultra ZU680KL:
    6.8 in
    A403:
    4 in
  • Chipset

    Zenfone 3 Ultra ZU680KL:
    Qualcomm MSM8976 Snapdragon 652 (28 nm)
    A403:
    Spreadtrum SC7715
  • Depth

    Zenfone 3 Ultra ZU680KL: 3.4 mm thinner

    Zenfone 3 Ultra ZU680KL:
    6.8 mm
    A403:
    10.2 mm
  • Height

    A403: 61.4 mm shorter

    Zenfone 3 Ultra ZU680KL:
    186.4 mm
    A403:
    125 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 +61.4 mm versus A403
    Width:
    93.9 mm +28.9 mm versus A403
    Depth:
    6.8 mm
  2. 2. A403

    Height:
    125 mm
    Width:
    65 mm
    Depth:
    10.2 mm +3.4 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

    +120 g versus A403

  2. 2. A403

    113 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. A403

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²

Zenfone 3 Ultra ZU680KL has approximately 179.9% more rectangular screen area than A403.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

Zenfone 3 Ultra ZU680KL: Original memory entry

32/64/128 GB · 3/4 GB RAM

A403: Original memory entry

4 GB · 512 MB 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. A403

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 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

    +3200 mAh versus A403

  2. 2. A403

    1400 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. A403

Everyday essentials
Everyday essentials — specifications for Zenfone 3 Ultra ZU680KL, A403.
SpecificationZenfone 3 Ultra ZU680KLA403
Dimensions (HxWxD)
  • 186.4 Х 93.9 Х 6.8 mm
  • 125 Х 65 Х 10.2 mm
Weight
  • 233 g
  • 113 g
Technology
  • IPS LCD
Unknown
Screen size
  • 6.8" inch
  • 4" inch
Screen resolution
  • 1080 x 1920 px
  • 480 x 800 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
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSD
  • up to 256 GB (uses SIM 2 slot)
  • microSD
  • up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 4600 mAh
  • Non-removable Li-Ion
  • 1400 mAh
  • Li-Ion
Operating system OS
  • Android 6.1 (Marshmallow); ZenUI 3
  • Android 4.4.2 (KitKat)
Chipset
  • Qualcomm MSM8976 Snapdragon 652 (28 nm)
  • Spreadtrum SC7715
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Zenfone 3 Ultra ZU680KL, A403.
SpecificationZenfone 3 Ultra ZU680KLA403
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
Unknown
Screen area
  • 127.5 cm2
  • 45.5 cm2
Screen format
  • 16:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 72.8%
  • 56.1%
PPI /points per inch/
  • 324 PPI
  • 233 PPI
Screen protection
  • Corning Gorilla Glass 4
Unknown
Camera and Video
Camera and Video — specifications for Zenfone 3 Ultra ZU680KL, A403.
SpecificationZenfone 3 Ultra ZU680KLA403
Rear camera, main
  • 23 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 23 MP
  • f/2.0
  • 1/2.6''
  • 1.0µm
  • 4-axis OIS
  • PDAF & laser AF
  • 3.15 MP
Functions
  • Dual-LED dual-tone flash
  • HDR
  • panorama
  • LED flash
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 8 MP
  • Single
  • 1.3 MP
  • Single
Specifications
  • 8 MP
  • f/2.0
  • 1.3 MP
Performance

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

Performance — specifications for Zenfone 3 Ultra ZU680KL, A403.
SpecificationZenfone 3 Ultra ZU680KLA403
Processor CPU
  • Octa-core (4x1.8 GHz Cortex-A72 & 4x1.4 GHz Cortex-A53)
  • 1.0 GHz
Graphics processor GPU
  • Adreno 510
Unknown
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, A403.
SpecificationZenfone 3 Ultra ZU680KLA403
Release date
  • 2016
  • May
  • 2015
  • August
Colors
  • Glacier Silver
  • Titanium Gray
  • Metallic Pink
  • Black
  • Light Blue
  • Red
  • Yellow
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 300 EUR
Unknown
Battery life
  • Talking time- Up to 34 h (3G)
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Zenfone 3 Ultra ZU680KL, A403.
SpecificationZenfone 3 Ultra ZU680KLA403
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 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 900 / 1800 - SIM 1 & SIM 2
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
  • HSPA
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
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
  • A-GPS
USB
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
  • microUSB 2.0
Bluetooth
  • 4.2
  • A2DP
  • EDR
  • LE
  • 2.0
Harmful irradiation Unknown
  • SAR EU - 0.38 W/kg (head) 0.68 W/kg (body)
Music and Audio
Music and Audio — specifications for Zenfone 3 Ultra ZU680KL, A403.
SpecificationZenfone 3 Ultra ZU680KLA403
Radio
  • FM radio
  • FM radio
Others
  • 24-bit/192kHz audio
Unknown
Other features
Other features — specifications for Zenfone 3 Ultra ZU680KL, A403.
SpecificationZenfone 3 Ultra ZU680KLA403
Dop
  • Sensors Fingerprint (front-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging: 60% in 45 min (Quick Charge 3.0)
  • Sensors Accelerometer