Asus Zenfone 4 Pro ZS551KL vs Plum Trigger Plus

Compare recorded specifications, size and practical differences.

+ Add a third phone

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

    Trigger Plus: 55 g lighter

    Zenfone 4 Pro ZS551KL:
    175 g
    Trigger Plus:
    120 g
  • Width

    Trigger Plus: 13.2 mm narrower

    Zenfone 4 Pro ZS551KL:
    75.6 mm
    Trigger Plus:
    62.4 mm
  • Screen diagonal

    Trigger Plus: 2 in smaller diagonal

    Zenfone 4 Pro ZS551KL:
    5.5 in
    Trigger Plus:
    3.5 in
  • Chipset

    Zenfone 4 Pro ZS551KL:
    Qualcomm MSM8998 Snapdragon 835 (10 nm)
    Trigger Plus:
    Mediatek MT6572 (28 nm)
  • Rear camera layout

    Zenfone 4 Pro ZS551KL:
    Dual
    Trigger Plus:
    Single
  • Depth

    Zenfone 4 Pro ZS551KL: 3.9 mm thinner

    Zenfone 4 Pro ZS551KL:
    7.6 mm
    Trigger Plus:
    11.5 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 4 Pro ZS551KL

    Height:
    156.9 mm +38.9 mm versus Trigger Plus
    Width:
    75.6 mm +13.2 mm versus Trigger Plus
    Depth:
    7.6 mm
  2. 2. Trigger Plus

    Height:
    118 mm
    Width:
    62.4 mm
    Depth:
    11.5 mm +3.9 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

    +55 g versus Trigger Plus

  2. 2. Trigger Plus

    120 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. Trigger Plus

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    36.5 cm²

Zenfone 4 Pro ZS551KL has approximately 128.6% more rectangular screen area than Trigger Plus.

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, Trigger Plus, compared at the same storage capacity.
StorageZenfone 4 Pro ZS551KLTrigger Plus
64 GB 6 GB RAM Unknown
128 GB 6 GB RAM Unknown
Trigger Plus: Original memory entry

2 GB · 256 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 4 Pro ZS551KL

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

2. Trigger Plus

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 4 Pro ZS551KL

    3600 mAh

    +2500 mAh versus Trigger Plus

  2. 2. Trigger Plus

    1100 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. Trigger Plus

Everyday essentials
Everyday essentials — specifications for Zenfone 4 Pro ZS551KL, Trigger Plus.
SpecificationZenfone 4 Pro ZS551KLTrigger Plus
Dimensions (HxWxD)
  • 156.9 Х 75.6 Х 7.6 mm
  • 118 Х 62.4 Х 11.5 mm
Weight
  • 175 g
  • 120 g
Technology
  • AMOLED
  • TFT
Screen size
  • 5.5" inch
  • 3.5" inch
Screen resolution
  • 1080 x 1920 px
  • 320 x 480 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
  • 2 GB
  • 256 MB RAM
Memory card support
  • microSD
  • up to 512 GB (uses SIM 2 slot)
  • microSD
  • up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 3600 mAh
  • Non-removable Li-Ion
  • 1100 mAh
  • Removable Li-Ion
Operating system OS
  • Android 7.1.1 (Nougat)
  • upgradable to Android 8 (Oreo); ZenUI 4
  • Android 4.2.2 (Jelly Bean)
Chipset
  • Qualcomm MSM8998 Snapdragon 835 (10 nm)
  • Mediatek MT6572 (28 nm)
NFC
  • Yes
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Zenfone 4 Pro ZS551KL, Trigger Plus.
SpecificationZenfone 4 Pro ZS551KLTrigger Plus
Touchscreen
  • capacitive touchscreen
  • touchscreen
Display colors
  • 16M
  • 256K
Screen area
  • 83.4 cm2
  • 36.5 cm2
Screen format
  • 16:9 (height:width)
  • 3:2 (height:width)
Screen to body ratio
  • 70.3%
  • 49.5%
PPI /points per inch/
  • 401 PPI
  • 165 PPI
Screen protection
  • Corning Gorilla Glass 5
Unknown
Camera and Video
Camera and Video — specifications for Zenfone 4 Pro ZS551KL, Trigger Plus.
SpecificationZenfone 4 Pro ZS551KLTrigger Plus
Rear camera, main
  • 12 MP
  • Dual
  • 5 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
  • 5 MP
  • AF
Functions
  • HDR
  • Face detection
Video
  • 1080p@30fps
  • 720p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 1.3 MP
  • Single
Specifications
  • 8 MP
  • f/1.9
  • 1/3.2''
  • 22mm (wide)
  • 1.4µm
  • PDAF
  • 1.3 MP
Performance
Performance — specifications for Zenfone 4 Pro ZS551KL, Trigger Plus.
SpecificationZenfone 4 Pro ZS551KLTrigger Plus
Processor CPU
  • Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)
  • Dual-core 1.3 GHz Cortex-A7
Graphics processor GPU
  • Adreno 540
  • Mali-400
General specs
General specs — specifications for Zenfone 4 Pro ZS551KL, Trigger Plus.
SpecificationZenfone 4 Pro ZS551KLTrigger Plus
Release date
  • 2017
  • August
  • 2014
  • May
Colors
  • Moonlight White
  • Pure Black
  • Black
  • White
  • Blue
  • Red
  • Pink
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 650 h (2G) / Up to 540 h (3G) Talking time- Up to 12 h (2G) / Up to 11 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, Trigger Plus.
SpecificationZenfone 4 Pro ZS551KLTrigger Plus
SIM card
  • Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM (dual stand-by)
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
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A (3CA) Cat12 600/150 or 100 Mbps
  • HSPA 21.1/5.76 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
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
  • GALILEO
  • Yes
  • with A-GPS
USB
  • Type-C 1.0 reversible connector
  • microUSB
Bluetooth
  • 5.0
  • A2DP
  • EDR
  • LE
  • aptX
  • 4.0
  • A2DP
Music and Audio
Music and Audio — specifications for Zenfone 4 Pro ZS551KL, Trigger Plus.
SpecificationZenfone 4 Pro ZS551KLTrigger Plus
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, Trigger Plus.
SpecificationZenfone 4 Pro ZS551KLTrigger Plus
Dop
  • Sensors Fingerprint (front-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • color spectrum
  • Infrared port - Fast battery charging: 50% in 32 min
  • Sensors Accelerometer
  • gyro
  • proximity - Also known as Plum Z305