1. Home
  2. Comparison

Asus Zenfone Max Pro (M2) ZB631KL vs Palm Centro

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

      Centro: 51 g lighter

      Zenfone Max Pro (M2) ZB631KL:
      175 g
      Centro:
      124 g

    • Width

      Centro: 22 mm narrower

      Zenfone Max Pro (M2) ZB631KL:
      75.5 mm
      Centro:
      53.5 mm

    • Screen diagonal

      Centro: 4.01 in smaller diagonal

      Zenfone Max Pro (M2) ZB631KL:
      6.26 in
      Centro:
      2.25 in

    • Rear camera layout

      Zenfone Max Pro (M2) ZB631KL:
      Dual
      Centro:
      Single

    • Depth

      Zenfone Max Pro (M2) ZB631KL: 10.1 mm thinner

      Zenfone Max Pro (M2) ZB631KL:
      8.5 mm
      Centro:
      18.6 mm

    • Height

      Centro: 50.7 mm shorter

      Zenfone Max Pro (M2) ZB631KL:
      157.9 mm
      Centro:
      107.2 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 Max Pro (M2) ZB631KL

      Height:
      157.9 mm +50.7 mm versus Centro
      Width:
      75.5 mm +22 mm versus Centro
      Depth:
      8.5 mm

    2. 2. Centro

      Height:
      107.2 mm
      Width:
      53.5 mm
      Depth:
      18.6 mm +10.1 mm versus Zenfone Max Pro (M2) ZB631KL

    Weight

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

    1. 1. Zenfone Max Pro (M2) ZB631KL

      175 g

      +51 g versus Centro

    2. 2. Centro

      124 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 Max Pro (M2) ZB631KL

      Screen diagonal:
      6.26 in
      Aspect ratio (height:width):
      19:9
      Approximate rectangular screen area:
      97.8 cm²

    2. 2. Centro

      Screen diagonal:
      2.25 in
      Aspect ratio (height:width):
      1:1
      Approximate rectangular screen area:
      16.3 cm²

    Zenfone Max Pro (M2) ZB631KL has approximately 498.9% more rectangular screen area than Centro.

    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 Max Pro (M2) ZB631KL: Original memory entry

    64 GB · 4/6 GB RAM 32 GB · 3 GB RAM

    Centro: Original memory entry

    64 MB

    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 Max Pro (M2) ZB631KL

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

    2. Centro

    NFC:
    Unknown
    Headphone jack:
    No
    Memory card support:
    See details microSD · up to 4 GB (dedicated slot)

    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 Max Pro (M2) ZB631KL

      5000 mAh

      +3850 mAh versus Centro

    2. 2. Centro

      1150 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 Max Pro (M2) ZB631KL2. Centro

    Everyday essentials
    Everyday essentials — specifications for Zenfone Max Pro (M2) ZB631KL, Centro.
    SpecificationZenfone Max Pro (M2) ZB631KLCentro
    Dimensions (HxWxD)
    • 157.9 Х 75.5 Х 8.5 mm
    • 107.2 Х 53.5 Х 18.6 mm
    Weight
    • 175 g
    • 124 g
    Technology
    • IPS LCD
    • TFT
    Screen size
    • 6.26" inch
    • 2.25" inch
    Screen resolution
    • 1080 x 2280 px
    • 320 x 320 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 64 GB
    • 4/6 GB RAM 32 GB
    • 3 GB RAM
    • 64 MB
    Memory card support
    • microSD
    • up to 512 GB (dedicated slot)
    • microSD
    • up to 4 GB (dedicated slot)
    Battery Capacity is not battery life. No endurance test is implied.
    • 5000 mAh
    • Non-removable Li-Po
    • 1150 mAh
    • Removable Li-Ion
    Operating system OS
    • Android 8.1 (Oreo)
    • Palm OS 5.4.9
    Chipset
    • Qualcomm SDM660 Snapdragon 660 (14 nm)
    		 Unknown
    NFC
    • Yes
    		 Unknown
    Headphone jack
    • Yes
    • No
    Display
    Display — specifications for Zenfone Max Pro (M2) ZB631KL, Centro.
    SpecificationZenfone Max Pro (M2) ZB631KLCentro
    Touchscreen
    • capacitive touchscreen
    • resistive touchscreen
    Display colors
    • 16M
    • 65K
    Screen area
    • 97.8 cm2
    • 16.3 cm2
    Screen format
    • 19:9 (height:width)
    • 1:1 (height:width)
    Screen to body ratio
    • 82.0%
    • 28.5%
    PPI /points per inch/
    • 403 PPI
    • 201 PPI
    Screen protection
    • Corning Gorilla Glass 6
    		 Unknown
    Camera and Video
    Camera and Video — specifications for Zenfone Max Pro (M2) ZB631KL, Centro.
    SpecificationZenfone Max Pro (M2) ZB631KLCentro
    Rear camera, main
    • 12 MP
    • Dual
    • 1.3 MP
    • Single
    Camera specs
    • 12 MP
    • f/1.8
    • 1/2.9''
    • 1.25µm
    • PDAF -5 MP
    • f/2.4
    • 1.12µm
    • depth sensor
    • 1.3 MP
    Functions
    • LED flash
    • HDR
    		 Unknown
    Video
    • 1080p@30fps
    • Yes
    Front camera, selfie
    • 13 MP
    • Single
    • 0 MP,
    Specifications
    • 13MP
    • f/2.0
    • 1.12µm
    		 Unknown
    Performance

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

    Performance — specifications for Zenfone Max Pro (M2) ZB631KL, Centro.
    SpecificationZenfone Max Pro (M2) ZB631KLCentro
    Processor CPU
    • Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
    • 32-bit Intel XScale PXA270 312 MHz
    Graphics processor GPU
    • Adreno 512
    		 Unknown
    GeekBench 5 Single Core *
    • 291
    		 Unknown
    GeekBench 5 Multi-Core *
    • 1204
    		 Unknown
    General specs
    General specs — specifications for Zenfone Max Pro (M2) ZB631KL, Centro.
    SpecificationZenfone Max Pro (M2) ZB631KLCentro
    Release date
    • 2018
    • December
    • 2008
    • February
    Colors
    • Blue
    • Titanium
    • Obsidian
    • Glacier
    • Midnight
    • Cobalt
    • Onyx
    • Electric Blue
    • Rose
    • Olive
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
    • 70 EUR
    Battery life Unknown
    • Stand by time- Up to 300 h Talking time- Up to 4 h
    Body build
    • Front glass
    • plastic body
    		 Unknown
    Communication and Connectivity
    Communication and Connectivity — specifications for Zenfone Max Pro (M2) ZB631KL, Centro.
    SpecificationZenfone Max Pro (M2) ZB631KLCentro
    SIM card
    • Dual SIM (Nano-SIM
    • dual stand-by)
    • Mini-SIM
    Network
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE band 1(2100)
    • 3(1800)
    • 5(850)
    • 7(2600)
    • 8(900)
    • 20(800)
    • 40(2300)
    		 Unknown
    Speed
    • HSPA 42.2/5.76 Mbps
    • LTE-A (3CA) Cat9 450/50 Mbps
    		 Unknown
    GPRS
    • Yes
    • Class 10
    Edge
    • Yes
    • Class 10
    Wi-Fi
    • Wi-Fi 802.11 b/g/n
    • WiFi Direct
    • hotspot
    • No
    GPS
    • Yes
    • with A-GPS
    • GLONASS
    • BDS
    • GALILEO
    • QZSS
    • No
    USB
    • microUSB 2.0
    • USB On-The-Go
    • Proprietary
    Bluetooth
    • 5.0
    • A2DP
    • LE
    • 1.2
    • A2DP
    Harmful irradiation Unknown
    • SAR - 0.27 W/kg (head) 0.22 W/kg (body)
    Music and Audio
    Music and Audio — specifications for Zenfone Max Pro (M2) ZB631KL, Centro.
    SpecificationZenfone Max Pro (M2) ZB631KLCentro
    Radio
    • FM radio
    • No
    Others
    • Active noise cancellation with dedicated mic
    • 5-way navigation button
    Other features
    Other features — specifications for Zenfone Max Pro (M2) ZB631KL, Centro.
    SpecificationZenfone Max Pro (M2) ZB631KLCentro
    Dop
    • Sensors Fingerprint (rear-mounted)
    • accelerometer
    • gyro
    • proximity
    • compass - Charging 5V/2A 10W
    • Infrared port - Document editor (Word
    • Excel
    • PowerPoint
    • PDF) -MP3 player -Organizer -Voice memo