Oppo A31 vs Xiaomi Mi Max 3

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

    A31: 41 g lighter

    A31:
    180 g
    Mi Max 3:
    221 g
  • Width

    A31: 11.9 mm narrower

    A31:
    75.5 mm
    Mi Max 3:
    87.4 mm
  • Screen diagonal

    A31: 0.4 in smaller diagonal

    A31:
    6.5 in
    Mi Max 3:
    6.9 in
  • Rear camera layout

    A31:
    Triple
    Mi Max 3:
    Dual
  • Height

    A31: 12.3 mm shorter

    A31:
    163.9 mm
    Mi Max 3:
    176.2 mm
  • Release year

    A31:
    2020
    Mi Max 3:
    2018

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. A31

    Height:
    163.9 mm
    Width:
    75.5 mm
    Depth:
    8.3 mm
  2. 2. Mi Max 3

    Height:
    176.2 mm +12.3 mm versus A31
    Width:
    87.4 mm +11.9 mm versus A31
    Depth:
    8 mm

Weight

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

  1. 1. A31

    180 g

  2. 2. Mi Max 3

    221 g

    +41 g versus A31

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. A31

    Screen diagonal:
    6.5 in
    Aspect ratio (height:width):
    20:9
    Approximate rectangular screen area:
    102 cm²
  2. 2. Mi Max 3

    Screen diagonal:
    6.9 in
    Aspect ratio (height:width):
    18:9
    Approximate rectangular screen area:
    122.9 cm²

Mi Max 3 has approximately 20.4% more rectangular screen area than A31.

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 A31, Mi Max 3, compared at the same storage capacity.
StorageA31Mi Max 3
128 GB 4 GB RAM Unknown
Mi Max 3: Original memory entry

128 GB · 6 GB RAM 64 GB · 512GB 4GB

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. A31

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSDXC (dedicated slot)

2. Mi Max 3

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 2 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. A31

    4230 mAh

  2. 2. Mi Max 3

    5500 mAh

    +1270 mAh versus A31

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. A312. Mi Max 3

Everyday essentials
Everyday essentials — specifications for A31, Mi Max 3.
SpecificationA31Mi Max 3
Dimensions (HxWxD)
  • 163.9 Х 75.5 Х 8.3 mm
  • 176.2 Х 87.4 Х 8 mm
Weight
  • 180 g
  • 221 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 6.5" inch
  • 6.9" inch
Screen resolution
  • 720 x 1600 px
  • 1080 x 2160 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128GB 4GB RAM
  • 128 GB
  • 6 GB RAM 64 GB
  • 512GB 4GB
Memory card support
  • microSDXC (dedicated slot)
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 4230 mAh
  • Non-removable Li-Po
  • 5500 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 9.0 (Pie); ColorOS 6.1
  • Android 8.1 (Oreo); MIUI 9.5
Chipset
  • Mediatek MT6765V/CB Helio P35 (12nm)
  • Qualcomm SDM636 Snapdragon 636 (14 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A31, Mi Max 3.
SpecificationA31Mi Max 3
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 102.0 cm2
  • 122.9 cm2
Screen format
  • 20:9 (height:width)
  • 18:9 (height:width)
Screen to body ratio
  • 82.4%
  • 79.8%
PPI /points per inch/
  • 270 PPI
  • 350 PPI
Screen protection Unknown
  • To be confirmed
Camera and Video
Camera and Video — specifications for A31, Mi Max 3.
SpecificationA31Mi Max 3
Rear camera, main
  • 12 MP
  • Triple
  • 12 MP
  • Dual
Camera specs
  • 12 MP
  • f/1.8
  • (wide)
  • PDAF -2 MP
  • f/2.4
  • 27mm (macro)
  • 1/5.0''
  • 1.75µm -2 MP
  • (depth)
  • 12 MP
  • f/1.9
  • 1/2.55''
  • 1.4µm
  • dual pixel PDAF -5 MP
  • depth sensor
Functions
  • HDR
  • Dual-LED flash
  • HDR
  • panorama
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 8 MP
  • Single
Specifications
  • 8 MP
  • f/2.0
  • 8 MP
  • f/2.0
  • 1/4''
  • 1.12µm
Performance

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

Performance — specifications for A31, Mi Max 3.
SpecificationA31Mi Max 3
Processor CPU
  • Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
  • Octa-core 1.8 GHz Kryo 260
Graphics processor GPU
  • PowerVR GE8320
  • Adreno 509
Antutu 7 score * Unknown
  • 118846
GeekBench 4 Single Core * Unknown
  • 1336
GeekBench 4 Multi-Core * Unknown
  • 4896
Antutu 8 score *
  • 105221
  • 143749
GeekBench 5 Single Core * Unknown
  • 276
GeekBench 5 Multi-Core * Unknown
  • 1212
General specs
General specs — specifications for A31, Mi Max 3.
SpecificationA31Mi Max 3
Release date
  • 2020
  • February 13
  • 2018
  • July
Colors
  • Fantasy White
  • Mystery Black
  • Black
  • Champagne Gold
  • Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 180 EUR
  • 230 EUR
Body build
  • Glass front
  • plastic back
  • plastic frame
  • Front glass
  • aluminum body
Communication and Connectivity
Communication and Connectivity — specifications for A31, Mi Max 3.
SpecificationA31Mi Max 3
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE (unspecified)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO -4G - LTE band 1(2100)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 20(800)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A
  • HSPA
  • LTE
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • DLNA
  • hotspot
GPS
  • Yes
  • with A-GPS
  • BDS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • USB On-The-Go
  • Type-C 1.0 reversible connector
Bluetooth
  • 5.0
  • A2DP
  • LE
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for A31, Mi Max 3.
SpecificationA31Mi Max 3
Radio
  • FM radio
  • FM radio
Others
  • 480 nits typ. brightness
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for A31, Mi Max 3.
SpecificationA31Mi Max 3
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Fast battery charging 9V/2A 18W (Quick Charge 3.0)