Oppo A31 vs Samsung Galaxy A70

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.

  • Display technology

    OLED versus LCD

    A31:
    LCD
    Galaxy A70:
    OLED
  • Width

    A31: 1.2 mm narrower

    A31:
    75.5 mm
    Galaxy A70:
    76.7 mm
  • Screen diagonal

    A31: 0.2 in smaller diagonal

    A31:
    6.5 in
    Galaxy A70:
    6.7 in
  • Release year

    A31:
    2020
    Galaxy A70:
    2019

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. Galaxy A70

    Height:
    164.3 mm
    Width:
    76.7 mm +1.2 mm versus A31
    Depth:
    7.9 mm

Weight

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

  1. 1. A31

    180 g

  2. 2. Galaxy A70

    183 g

    +3 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. Galaxy A70

    Screen diagonal:
    6.7 in
    Aspect ratio (height:width):
    20:9
    Approximate rectangular screen area:
    108.4 cm²

Galaxy A70 has approximately 6.2% 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, Galaxy A70, compared at the same storage capacity.
StorageA31Galaxy A70
128 GB 4 GB RAM Unknown
Galaxy A70: Original memory entry

128 GB · 6/8 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. A31

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

2. Galaxy A70

NFC:
See details Yes (market dependent)
Headphone jack:
Yes
Memory card support:
See details microSD · up to 512 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. A31

    4230 mAh

  2. 2. Galaxy A70

    4500 mAh

    +270 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. Galaxy A70

Everyday essentials
Everyday essentials — specifications for A31, Galaxy A70.
SpecificationA31Galaxy A70
Dimensions (HxWxD)
  • 163.9 Х 75.5 Х 8.3 mm
  • 164.3 Х 76.7 Х 7.9 mm
Weight
  • 180 g
  • 183 g
Technology
  • IPS LCD
  • Super AMOLED
Screen size
  • 6.5" inch
  • 6.7" inch
Screen resolution
  • 720 x 1600 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128GB 4GB RAM
  • 128 GB
  • 6/8 GB RAM
Memory card support
  • microSDXC (dedicated slot)
  • microSD
  • up to 512 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 4230 mAh
  • Non-removable Li-Po
  • 4500 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 9.0 (Pie); ColorOS 6.1
  • Android 9.0 (Pie)
Chipset
  • Mediatek MT6765V/CB Helio P35 (12nm)
  • Qualcomm SDM675 Snapdragon 675 (11 nm)
NFC Unknown
  • Yes (market dependent)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A31, Galaxy A70.
SpecificationA31Galaxy A70
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 102.0 cm2
  • 108.4 cm2
Screen format
  • 20:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 82.4%
  • 86%
PPI /points per inch/
  • 270 PPI
  • 393 PPI
Screen protection Unknown
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video — specifications for A31, Galaxy A70.
SpecificationA31Galaxy A70
Rear camera, main
  • 12 MP
  • Triple
  • 32 MP
  • Triple
Camera specs
  • 12 MP
  • f/1.8
  • (wide)
  • PDAF -2 MP
  • f/2.4
  • 27mm (macro)
  • 1/5.0''
  • 1.75µm -2 MP
  • (depth)
  • 32 MP
  • f/1.7
  • PDAF -8 MP
  • f/2.2
  • 12mm (ultrawide) -5 MP
  • depth sensor
Functions
  • HDR
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 32 MP
  • Single
Specifications
  • 8 MP
  • f/2.0
  • 32 MP
  • f/2.0
  • 0.8µm
Performance

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

Performance — specifications for A31, Galaxy A70.
SpecificationA31Galaxy A70
Processor CPU
  • Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
  • Octa-core (2x2.0 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver)
Graphics processor GPU
  • PowerVR GE8320
  • Adreno 612
Antutu 7 score * Unknown
  • 167482
GeekBench 4 Single Core * Unknown
  • 2341
GeekBench 4 Multi-Core * Unknown
  • 6600
Antutu 8 score *
  • 105221
  • 210563
GeekBench 5 Single Core * Unknown
  • 480
GeekBench 5 Multi-Core * Unknown
  • 1528
General specs
General specs — specifications for A31, Galaxy A70.
SpecificationA31Galaxy A70
Release date
  • 2020
  • February 13
  • 2019
  • March
Colors
  • Fantasy White
  • Mystery Black
  • Coral
  • Blue
  • Black
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 180 EUR
  • 330 EUR
Body build
  • Glass front
  • plastic back
  • plastic frame
  • Front glass
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for A31, Galaxy A70.
SpecificationA31Galaxy A70
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Single SIM (Nano-SIM)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 (dual-SIM model only) -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 20(800)
  • 38(2600)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A
  • HSPA
  • LTE-A
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
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • BDS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • microUSB 2.0
  • 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 EU - 0.35 W/kg (head) 1.48 W/kg (body)
Music and Audio
Music and Audio — specifications for A31, Galaxy A70.
SpecificationA31Galaxy A70
Radio
  • FM radio
  • FM radio
Others
  • 480 nits typ. brightness
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for A31, Galaxy A70.
SpecificationA31Galaxy A70
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass
  • Sensors Fingerprint (under display)
  • accelerometer
  • gyro
  • proximity
  • compass - ANT+ - Fast battery charging 25W - Versions: SM-A705F/DS (Global); SM-A7050 (China)