Asus Zenfone Max Pro (M2) ZB631KL vs O2 XDA II

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

    Zenfone Max Pro (M2) ZB631KL: 15 g lighter

    Zenfone Max Pro (M2) ZB631KL:
    175 g
    XDA II:
    190 g
  • Width

    XDA II: 5.5 mm narrower

    Zenfone Max Pro (M2) ZB631KL:
    75.5 mm
    XDA II:
    70 mm
  • Screen diagonal

    XDA II: 2.76 in smaller diagonal

    Zenfone Max Pro (M2) ZB631KL:
    6.26 in
    XDA II:
    3.5 in
  • Rear camera layout

    Zenfone Max Pro (M2) ZB631KL:
    Dual
    XDA II:
    Single
  • Depth

    Zenfone Max Pro (M2) ZB631KL: 10.5 mm thinner

    Zenfone Max Pro (M2) ZB631KL:
    8.5 mm
    XDA II:
    19 mm
  • Height

    XDA II: 27.9 mm shorter

    Zenfone Max Pro (M2) ZB631KL:
    157.9 mm
    XDA II:
    130 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 +27.9 mm versus XDA II
    Width:
    75.5 mm +5.5 mm versus XDA II
    Depth:
    8.5 mm
  2. 2. XDA II

    Height:
    130 mm
    Width:
    70 mm
    Depth:
    19 mm +10.5 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

  2. 2. XDA II

    190 g

    +15 g versus Zenfone Max Pro (M2) ZB631KL

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. XDA II

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

Zenfone Max Pro (M2) ZB631KL has approximately 157.8% more rectangular screen area than XDA II.

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

XDA II: Original memory entry

128 MB RAM · 64 MB ROM

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. XDA II

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details MMC/SD

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

    +3800 mAh versus XDA II

  2. 2. XDA II

    1200 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. XDA II

Everyday essentials
Everyday essentials — specifications for Zenfone Max Pro (M2) ZB631KL, XDA II.
SpecificationZenfone Max Pro (M2) ZB631KLXDA II
Dimensions (HxWxD)
  • 157.9 Х 75.5 Х 8.5 mm
  • 130 Х 70 Х 19 mm
Weight
  • 175 g
  • 190 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 6.26" inch
  • 3.5" inch
Screen resolution
  • 1080 x 2280 px
  • 240 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
  • 128 MB RAM
  • 64 MB ROM
Memory card support
  • microSD
  • up to 512 GB (dedicated slot)
  • MMC/SD
Battery Capacity is not battery life. No endurance test is implied.
  • 5000 mAh
  • Non-removable Li-Po
  • 1200 mAh
  • Removable Li-Po
Operating system OS
  • Android 8.1 (Oreo)
  • Microsoft Windows Mobile 2003 for PocketPC Phone Edition
Chipset
  • Qualcomm SDM660 Snapdragon 660 (14 nm)
Unknown
NFC
  • Yes
Unknown
Headphone jack
  • Yes
  • No
Display
Display — specifications for Zenfone Max Pro (M2) ZB631KL, XDA II.
SpecificationZenfone Max Pro (M2) ZB631KLXDA II
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors
  • 16M
  • 65K
Screen area
  • 97.8 cm2
  • 37.9 cm2
Screen format
  • 19:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 82.0%
  • 41.7%
PPI /points per inch/
  • 403 PPI
  • 114 PPI
Screen protection
  • Corning Gorilla Glass 6
Unknown
Camera and Video
Camera and Video — specifications for Zenfone Max Pro (M2) ZB631KL, XDA II.
SpecificationZenfone Max Pro (M2) ZB631KLXDA II
Rear camera, main
  • 12 MP
  • Dual
  • 0.3 MP
  • Single
Camera specs
  • 12 MP
  • f/1.8
  • 1/2.9''
  • 1.25µm
  • PDAF -5 MP
  • f/2.4
  • 1.12µm
  • depth sensor
Unknown
Functions
  • LED flash
  • HDR
Unknown
Video
  • 1080p@30fps
  • No
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, XDA II.
SpecificationZenfone Max Pro (M2) ZB631KLXDA II
Processor CPU
  • Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
  • Intel Strong PXA263 400 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, XDA II.
SpecificationZenfone Max Pro (M2) ZB631KLXDA II
Release date
  • 2018
  • December
  • 2003
Colors
  • Blue
  • Titanium
Unknown
Battery life Unknown
  • Stand by time- Up to 150 h Talking time- Up to 3 h 30 min
Body build
  • Front glass
  • plastic body
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Zenfone Max Pro (M2) ZB631KL, XDA II.
SpecificationZenfone Max Pro (M2) ZB631KLXDA II
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
  • No
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
  • Yes
Music and Audio
Music and Audio — specifications for Zenfone Max Pro (M2) ZB631KL, XDA II.
SpecificationZenfone Max Pro (M2) ZB631KLXDA II
Radio
  • FM radio
  • No
Others
  • Active noise cancellation with dedicated mic
Unknown
Other features
Other features — specifications for Zenfone Max Pro (M2) ZB631KL, XDA II.
SpecificationZenfone Max Pro (M2) ZB631KLXDA II
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Charging 5V/2A 10W
  • Infrared port - Pocket Office -MP3/MP4 player -Voice memo - Produced by HTC. Functionally identical to Qtek 2020
  • i-mate Pocket PC
  • T-Mobile MDA II and Orange SPV M1000.