Oppo A31 vs Oppo R821T FInd Muse

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.

  • Width

    R821T FInd Muse: 12 mm narrower

    A31:
    75.5 mm
    R821T FInd Muse:
    63.5 mm
  • Screen diagonal

    R821T FInd Muse: 2.5 in smaller diagonal

    A31:
    6.5 in
    R821T FInd Muse:
    4 in
  • Rear camera layout

    A31:
    Triple
    R821T FInd Muse:
    Single
  • Depth

    A31: 1.6 mm thinner

    A31:
    8.3 mm
    R821T FInd Muse:
    9.9 mm
  • Height

    R821T FInd Muse: 40.9 mm shorter

    A31:
    163.9 mm
    R821T FInd Muse:
    123 mm
  • Release year

    A31:
    2020
    R821T FInd Muse:
    2013

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 +40.9 mm versus R821T FInd Muse
    Width:
    75.5 mm +12 mm versus R821T FInd Muse
    Depth:
    8.3 mm
    Weight:
    180 g
  2. 2. R821T FInd Muse

    Height:
    123 mm
    Width:
    63.5 mm
    Depth:
    9.9 mm +1.6 mm versus A31
    Weight:
    Unknown

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. R821T FInd Muse

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²

A31 has approximately 124% more rectangular screen area than R821T FInd Muse.

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, R821T FInd Muse, compared at the same storage capacity.
StorageA31R821T FInd Muse
128 GB 4 GB RAM Unknown
R821T FInd Muse: Original memory entry

4 GB · 512 MB 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. R821T FInd Muse

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 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

    +2530 mAh versus R821T FInd Muse

  2. 2. R821T FInd Muse

    1700 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. A312. R821T FInd Muse

Everyday essentials
Everyday essentials — specifications for A31, R821T FInd Muse.
SpecificationA31R821T FInd Muse
Dimensions (HxWxD)
  • 163.9 Х 75.5 Х 8.3 mm
  • 123 Х 63.5 Х 9.9 mm
Weight
  • 180 g
  • 0 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 6.5" inch
  • 4" inch
Screen resolution
  • 720 x 1600 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128GB 4GB RAM
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSDXC (dedicated slot)
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 4230 mAh
  • Non-removable Li-Po
  • 1700 mAh
  • Removable Li-Ion
Operating system OS
  • Android 9.0 (Pie); ColorOS 6.1
  • Android 4.2 (Jelly Bean)
Chipset
  • Mediatek MT6765V/CB Helio P35 (12nm)
  • Mediatek MT6572 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A31, R821T FInd Muse.
SpecificationA31R821T FInd Muse
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 102.0 cm2
  • 45.5 cm2
Screen format
  • 20:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 82.4%
  • 58.3%
PPI /points per inch/
  • 270 PPI
  • 233 PPI
Camera and Video
Camera and Video — specifications for A31, R821T FInd Muse.
SpecificationA31R821T FInd Muse
Rear camera, main
  • 12 MP
  • Triple
  • 3.15 MP
  • Single
Camera specs
  • 12 MP
  • f/1.8
  • (wide)
  • PDAF -2 MP
  • f/2.4
  • 27mm (macro)
  • 1/5.0''
  • 1.75µm -2 MP
  • (depth)
  • 3.15 MP
Functions
  • HDR
Unknown
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 8 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 8 MP
  • f/2.0
  • VGA
Performance

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

Performance — specifications for A31, R821T FInd Muse.
SpecificationA31R821T FInd Muse
Processor CPU
  • Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
  • Dual-core 1.2 GHz Cortex-A7
Graphics processor GPU
  • PowerVR GE8320
  • Mali-400
Antutu 8 score *
  • 105221
Unknown
General specs
General specs — specifications for A31, R821T FInd Muse.
SpecificationA31R821T FInd Muse
Release date
  • 2020
  • February 13
  • 2013
Colors
  • Fantasy White
  • Mystery Black
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 180 EUR
  • 290 EUR
Body build
  • Glass front
  • plastic back
  • plastic frame
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for A31, R821T FInd Muse.
SpecificationA31R821T FInd Muse
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM (Mini-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
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A
  • HSPA
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 b/g
  • hotspot
GPS
  • Yes
  • with A-GPS
  • BDS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • USB On-The-Go
  • microUSB 2.0
Bluetooth
  • 5.0
  • A2DP
  • LE
  • Yes
Music and Audio
Music and Audio — specifications for A31, R821T FInd Muse.
SpecificationA31R821T FInd Muse
Radio
  • FM radio
  • FM radio
Others
  • 480 nits typ. brightness
Unknown
Other features
Other features — specifications for A31, R821T FInd Muse.
SpecificationA31R821T FInd Muse
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass
  • Sensors Accelerometer
  • proximity