Oppo Reno A vs Samsung Galaxy M31

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

    Reno A: 21.5 g lighter

    Reno A:
    169.5 g
    Galaxy M31:
    191 g
  • Chipset

    Reno A:
    Qualcomm SDM710 Snapdragon 710 (10 nm)
    Galaxy M31:
    Exynos 9611 (10nm)
  • Rear camera layout

    Reno A:
    Dual
    Galaxy M31:
    Triple
  • Depth

    Reno A: 1.1 mm thinner

    Reno A:
    7.8 mm
    Galaxy M31:
    8.9 mm
  • Release year

    Reno A:
    2019
    Galaxy M31:
    2020

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. Reno A

    Height:
    158.4 mm
    Width:
    75.4 mm
    Depth:
    7.8 mm
  2. 2. Galaxy M31

    Height:
    159.2 mm
    Width:
    75.1 mm
    Depth:
    8.9 mm +1.1 mm versus Reno A

Weight

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

  1. 1. Reno A

    169.5 g

  2. 2. Galaxy M31

    191 g

    +21.5 g versus Reno A

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. Reno A

    Screen diagonal:
    6.4 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    100.5 cm²
  2. 2. Galaxy M31

    Screen diagonal:
    6.4 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    100.5 cm²

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 Reno A, Galaxy M31, compared at the same storage capacity.
StorageReno AGalaxy M31
64 GB Not recorded 6 GB RAM
128 GB Recorded for all phones 6 GB RAM 6 GB 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. Reno A

NFC:
Yes
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses shared SIM slot)

2. Galaxy M31

NFC:
See details Yes (market/region dependent)
Headphone jack:
Yes
Memory card support:
See details microSDXC (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. Reno A

    3600 mAh

  2. 2. Galaxy M31

    6000 mAh

    +2400 mAh versus Reno A

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. Reno A2. Galaxy M31

Everyday essentials
Everyday essentials — specifications for Reno A, Galaxy M31.
SpecificationReno AGalaxy M31
Dimensions (HxWxD)
  • 158.4 Х 75.4 Х 7.8 mm
  • 159.2 Х 75.1 Х 8.9 mm
Weight
  • 169.5 g
  • 191 g
Technology
  • AMOLED
  • Super AMOLED
Screen size
  • 6.4" inch
  • 6.4" inch
Screen resolution
  • 1080 x 2340 px
  • 1080 x 2340 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128GB 6GB RAM
  • 64GB 6GB RAM
  • 128GB 6GB RAM
Memory card support
  • microSD
  • up to 256 GB (uses shared SIM slot)
  • microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3600 mAh
  • Non-removable Li-Po
  • 6000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 9.0 (Pie)
  • Android 10.0; One UI 2.0
Chipset
  • Qualcomm SDM710 Snapdragon 710 (10 nm)
  • Exynos 9611 (10nm)
NFC
  • Yes
  • Yes (market/region dependent)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Reno A, Galaxy M31.
SpecificationReno AGalaxy M31
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 100.5 cm2
  • 100.5 cm2
Screen format
  • 19.5:9 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 84.2%
  • 84.1%
PPI /points per inch/
  • 403 PPI
  • 403 PPI
Screen protection
  • Corning Gorilla Glass 5
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video — specifications for Reno A, Galaxy M31.
SpecificationReno AGalaxy M31
Rear camera, main
  • 16 MP
  • Dual
  • 64 MP
  • Triple
Camera specs
  • 16 MP
  • f/1.8
  • 1/2.8''
  • 1.12µm
  • PDAF -2 MP
  • depth sensor
  • 64 MP
  • f/1.8
  • 26mm (wide)
  • 1/1.72"
  • 0.8µm
  • PDAF -8 MP
  • f/2.2
  • 12mm (ultrawide)
  • 1/4.0"
  • 1.12µm -5 MP
  • f/2.4
  • 25mm (macro)
  • 1/5.0"
  • (depth)
Functions
  • HDR
  • HDR
Video
  • 1080p@30fps
  • 2160p@30fps
  • 1080p@30fps
Front camera, selfie
  • 25 MP
  • Single
  • 32 MP
  • Single
Specifications
  • 25 MP
  • f/2.4
  • 1/2.8''
  • 0.9μm
  • 32 MP
  • f/2.0
  • 26mm (wide)
  • 1/2.8''
  • 0.8µm
Performance

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

Performance — specifications for Reno A, Galaxy M31.
SpecificationReno AGalaxy M31
Processor CPU
  • Octa-core (2x2.2 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)
  • Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
Graphics processor GPU
  • Adreno 616
  • Mali-G72 MP3
Antutu 8 score * Unknown
  • 194554
General specs
General specs — specifications for Reno A, Galaxy M31.
SpecificationReno AGalaxy M31
Release date
  • 2019
  • September
  • 2020
  • February 25
Colors
  • Blue
  • Black
  • Ocean Blue
  • Space Black
  • Red
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 280 EUR
  • 200 EUR
Body build Unknown
  • Glass front (Gorilla Glass 3)
  • plastic back
  • plastic frame
Communication and Connectivity
Communication and Connectivity — specifications for Reno A, Galaxy M31.
SpecificationReno AGalaxy M31
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM (Nano-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) / 1900 / 2100 -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 18(800)
  • 19(800)
  • 26(850)
  • 28(700)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE (unspecified)
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
  • HSPA
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 а/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
  • 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 5.0
  • A2DP
  • LE
  • 5.0
  • A2DP
  • LE
Harmful irradiation Unknown
  • SAR - 0.52 W/kg (head) 0.69 W/kg (body) SAR EU - 0.52 W/kg (head) 0.69 W/kg (body)
Music and Audio
Music and Audio — specifications for Reno A, Galaxy M31.
SpecificationReno AGalaxy M31
Radio
  • No
  • FM radio
  • RDS
  • recording
Others
  • Active noise cancellation with dedicated mic
Unknown
Other features
Other features — specifications for Reno A, Galaxy M31.
SpecificationReno AGalaxy M31
Dop
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - IP67 dust/water resistant (up to 1m for 30 mins)
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging 15W - Versions: SM-M315F/DS