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InnoReviews

OPPO A3x 4G vs vivo Y31d

OPPO A3x 4G
32.9Inno Score
VS
WINNER
vivo Y31d
41.8Inno Score
28.9Performance28.9
37.6Display42.5
20Camera29
53.4Battery70.9
20Features46.7
6 spec wins — OPPO A3x 4G6 spec wins — vivo Y31d

InnoReviews verdict

vivo Y31d wins this phone face-off, 41.8 to 32.9, pulling ahead mainly in features (+27) and battery (+18). OPPO A3x 4G still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the OPPO A3x 4G

  • 15% lower weight: 186 g vs 219 g
  • Has 3.5mm jack — the other doesn't

Reasons to pick the vivo Y31d

  • Stronger display score: 43 vs 38
  • Stronger camera score: 29 vs 20
  • Stronger battery score: 71 vs 53
  • Stronger features score: 47 vs 20
  • 525% higher Main camera: 50 MP vs 8 MP

Display

Display comparison: OPPO A3x 4G versus vivo Y31d
SpecOPPO A3x 4Gvivo Y31d
Screen size6.67 ″6.75 ″+1%
Panel typeLCDIPS LCD
Resolution1604x720720x1570
Pixel density264 ppi+3%256 ppi
Refresh rate90 Hz120 Hz+33%
Peak brightness1,000 nits1,250 nits+25%
Screen-to-body89.9 %+5%85.3 %

Performance

Performance comparison: OPPO A3x 4G versus vivo Y31d
SpecOPPO A3x 4Gvivo Y31d
ChipsetSnapdragon 6s 4G Gen 1Qualcomm Snapdragon 6s 4G Gen 2
RAM (max)8 GB8 GB
Storage options64GB / 128GB / 256GB128/256GB
Storage typeeMMC 5.1UFS 2.2

Camera

Camera comparison: OPPO A3x 4G versus vivo Y31d
SpecOPPO A3x 4Gvivo Y31d
Main camera8 MP50 MP+525%
Main aperturef/2.0f/2.0
Max video1080p@30fps1080p@30fps
Front camera5 MP8 MP+60%
OIS—No

Battery

Battery comparison: OPPO A3x 4G versus vivo Y31d
SpecOPPO A3x 4Gvivo Y31d
Capacity5,100 mAh7,200 mAh+41%
Wired charging45 W+2%44 W

Design

Design comparison: OPPO A3x 4G versus vivo Y31d
SpecOPPO A3x 4Gvivo Y31d
Weight186 g+15%219 g
Thickness7.7 mm+9%8.4 mm
IP ratingIP54IP68/IP69
Frame material—Plastic

Connectivity

Connectivity comparison: OPPO A3x 4G versus vivo Y31d
SpecOPPO A3x 4Gvivo Y31d
5GNoNo
Wi-FiWi-Fi 5Wi-Fi 5
Bluetooth5.05.1
NFCNoNo
USBUSB-CUSB-C 2.0
eSIM—No

Software

Software comparison: OPPO A3x 4G versus vivo Y31d
SpecOPPO A3x 4Gvivo Y31d
OS at launchAndroid 14 (ColorOS 14)Android 16 (OriginOS 6)

Audio

Audio comparison: OPPO A3x 4G versus vivo Y31d
SpecOPPO A3x 4Gvivo Y31d
Stereo speakers—Yes
3.5mm jackYesNo

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