You are using an outdated browser. For a faster, safer browsing experience, upgrade for free today.<

Oppo A31 vs T-Mobile Sidekick

Compare recorded specifications, size and practical differences.

+ Add a third phone

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

    Sidekick: 52 g lighter

    A31:
    180 g
    Sidekick:
    128 g
  • Width

    Sidekick: 17.5 mm narrower

    A31:
    75.5 mm
    Sidekick:
    58 mm
  • Screen diagonal

    Sidekick: 3.9 in smaller diagonal

    A31:
    6.5 in
    Sidekick:
    2.6 in
  • Rear camera layout

    A31:
    Triple
    Sidekick:
    Single
  • Depth

    A31: 9.7 mm thinner

    A31:
    8.3 mm
    Sidekick:
    18 mm
  • Height

    Sidekick: 44.9 mm shorter

    A31:
    163.9 mm
    Sidekick:
    119 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. A31

    Height:
    163.9 mm +44.9 mm versus Sidekick
    Width:
    75.5 mm +17.5 mm versus Sidekick
    Depth:
    8.3 mm
  2. 2. Sidekick

    Height:
    119 mm
    Width:
    58 mm
    Depth:
    18 mm +9.7 mm versus A31

Weight

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

  1. 1. A31

    180 g

    +52 g versus Sidekick

  2. 2. Sidekick

    128 g

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. Sidekick

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

A31 has approximately 430.1% more rectangular screen area than Sidekick.

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, Sidekick, compared at the same storage capacity.
StorageA31Sidekick
128 GB 4 GB RAM Unknown
Sidekick: 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. A31

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

2. Sidekick

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD (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

    +3200 mAh versus Sidekick

  2. 2. Sidekick

    1030 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. Sidekick

Everyday essentials
Everyday essentials — specifications for A31, Sidekick.
SpecificationA31Sidekick
Dimensions (HxWxD)
  • 163.9 Х 75.5 Х 8.3 mm
  • 119 Х 58 Х 18 mm
Weight
  • 180 g
  • 128 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 6.5" inch
  • 2.6" inch
Screen resolution
  • 720 x 1600 px
  • 240 x 400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128GB 4GB RAM
  • 128 MB RAM
  • 64 MB ROM
Memory card support
  • microSDXC (dedicated slot)
  • microSD (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 4230 mAh
  • Non-removable Li-Po
  • 1030 mAh
  • Removable Li-Ion
Operating system OS
  • Android 9.0 (Pie); ColorOS 6.1
  • Danger 4.7
Chipset
  • Mediatek MT6765V/CB Helio P35 (12nm)
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A31, Sidekick.
SpecificationA31Sidekick
Touchscreen
  • capacitive touchscreen
Unknown
Display colors
  • 16M
  • 65K
Screen area
  • 102.0 cm2
  • 19.2 cm2
Screen format
  • 20:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 82.4%
  • 27.9%
PPI /points per inch/
  • 270 PPI
  • 179 PPI
Camera and Video
Camera and Video — specifications for A31, Sidekick.
SpecificationA31Sidekick
Rear camera, main
  • 12 MP
  • Triple
  • 1.3 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)
  • 1.3 MP
Functions
  • HDR
Unknown
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 8 MP
  • Single
  • 0 MP,
Specifications
  • 8 MP
  • f/2.0
Unknown
Performance

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

Performance — specifications for A31, Sidekick.
SpecificationA31Sidekick
Processor CPU
  • Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
Unknown
Graphics processor GPU
  • PowerVR GE8320
Unknown
Antutu 8 score *
  • 105221
Unknown
General specs
General specs — specifications for A31, Sidekick.
SpecificationA31Sidekick
Release date
  • 2020
  • February 13
  • 2008
  • July
Colors
  • Fantasy White
  • Mystery Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 180 EUR
Unknown
Battery life Unknown
  • Stand by time- Up to 216 h Talking time- Up to 5 h
Body build
  • Glass front
  • plastic back
  • plastic frame
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for A31, Sidekick.
SpecificationA31Sidekick
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 (unspecified)
Unknown
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A
Unknown
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
  • No
GPS
  • Yes
  • with A-GPS
  • BDS
  • No
USB
  • microUSB 2.0
  • USB On-The-Go
  • miniUSB
Bluetooth
  • 5.0
  • A2DP
  • LE
  • 2.0
  • A2DP
Music and Audio
Music and Audio — specifications for A31, Sidekick.
SpecificationA31Sidekick
Radio
  • FM radio
  • No
Others
  • 480 nits typ. brightness
  • Swivel display
Other features
Other features — specifications for A31, Sidekick.
SpecificationA31Sidekick
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass
  • MP3/WAV/WMA audio player -MP4 player -Voice memo -Predictive text input