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InnoReviews

OPPO A3x 4G vs vivo Y31 5G

OPPO A3x 4G
32.9Inno Score
VS
WINNER
vivo Y31 5G
40.3Inno Score
28.9Performance20
37.6Display39.6
20Camera29
53.4Battery66.2
20Features73.3
5 spec wins — OPPO A3x 4G6 spec wins — vivo Y31 5G

InnoReviews verdict

vivo Y31 5G wins this phone face-off, 40.3 to 32.9, pulling ahead mainly in features (+53) and battery (+13). 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

  • Stronger performance score: 29 vs 20
  • 33% higher RAM (max): 8 GB vs 6 GB
  • 11% lower weight: 186 g vs 209 g
  • Has 3.5mm jack — the other doesn't

Reasons to pick the vivo Y31 5G

  • Stronger camera score: 29 vs 20
  • Stronger battery score: 66 vs 53
  • Stronger features score: 73 vs 20
  • 525% higher Main camera: 50 MP vs 8 MP
  • 60% higher Front camera: 8 MP vs 5 MP

Display

Display comparison: OPPO A3x 4G versus vivo Y31 5G
SpecOPPO A3x 4Gvivo Y31 5G
Screen size6.67 ″6.68 ″
Panel typeLCDIPS LCD
Resolution1604x720720x1608
Pixel density264 ppi264 ppi
Refresh rate90 Hz120 Hz+33%
Peak brightness1,000 nits1,000 nits
Screen-to-body89.9 %—

Performance

Performance comparison: OPPO A3x 4G versus vivo Y31 5G
SpecOPPO A3x 4Gvivo Y31 5G
ChipsetSnapdragon 6s 4G Gen 1Qualcomm Snapdragon 4 Gen 2
RAM (max)8 GB+33%6 GB
Storage options64GB / 128GB / 256GB128GB
Storage typeeMMC 5.1eMMC 5.1

Camera

Camera comparison: OPPO A3x 4G versus vivo Y31 5G
SpecOPPO A3x 4Gvivo Y31 5G
Main camera8 MP50 MP+525%
Main aperturef/2.0f/1.8
Max video1080p@30fps1080p@30fps
Front camera5 MP8 MP+60%
OIS—No

Battery

Battery comparison: OPPO A3x 4G versus vivo Y31 5G
SpecOPPO A3x 4Gvivo Y31 5G
Capacity5,100 mAh6,500 mAh+27%
Wired charging45 W+2%44 W

Design

Design comparison: OPPO A3x 4G versus vivo Y31 5G
SpecOPPO A3x 4Gvivo Y31 5G
Weight186 g+11%209 g
Thickness7.7 mm+8%8.4 mm
IP ratingIP54IP68/IP69

Connectivity

Connectivity comparison: OPPO A3x 4G versus vivo Y31 5G
SpecOPPO A3x 4Gvivo Y31 5G
5GNoYes
Wi-FiWi-Fi 5Wi-Fi 5
Bluetooth5.04.2
NFCNoNo
USBUSB-CUSB-C 2.0
eSIM—No

Software

Software comparison: OPPO A3x 4G versus vivo Y31 5G
SpecOPPO A3x 4Gvivo Y31 5G
OS at launchAndroid 14 (ColorOS 14)Android 15 (Funtouch OS 15)

Audio

Audio comparison: OPPO A3x 4G versus vivo Y31 5G
SpecOPPO A3x 4Gvivo Y31 5G
Stereo speakers—Yes
3.5mm jackYesNo

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