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InnoReviews

OPPO K15 vs vivo Y31 5G

WINNER
OPPO K15
61.1Inno Score
VS
vivo Y31 5G
40.3Inno Score
46.7Performance20
53.6Display39.6
58.6Camera29
79.8Battery66.2
86.7Features73.3
10 spec wins — OPPO K151 spec wins — vivo Y31 5G

InnoReviews verdict

OPPO K15 wins this phone face-off, 61.1 to 40.3, pulling ahead mainly in camera (+30) and performance (+27). vivo Y31 5G still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the OPPO K15

  • Stronger performance score: 47 vs 20
  • Stronger display score: 54 vs 40
  • Stronger camera score: 59 vs 29
  • Stronger battery score: 80 vs 66
  • Stronger features score: 87 vs 73

Reasons to pick the vivo Y31 5G

No decisive spec advantages — this side competes on price and preference.

Display

Display comparison: OPPO K15 versus vivo Y31 5G
SpecOPPO K15vivo Y31 5G
Screen size6.59 ″6.68 ″+1%
Panel typeAMOLEDIPS LCD
Resolution2760x1256720x1608
Pixel density460 ppi+74%264 ppi
Refresh rate120 Hz120 Hz
Peak brightness1,200 nits+20%1,000 nits
Screen-to-body88.9 %—

Performance

Performance comparison: OPPO K15 versus vivo Y31 5G
SpecOPPO K15vivo Y31 5G
ChipsetDimensity 7360 SuperQualcomm Snapdragon 4 Gen 2
RAM (max)12 GB+100%6 GB
Storage options256GB128GB
Storage typeUFS 3.1eMMC 5.1

Camera

Camera comparison: OPPO K15 versus vivo Y31 5G
SpecOPPO K15vivo Y31 5G
Main camera50 MP50 MP
Main aperturef/1.8f/1.8
Ultra-wide50 MP—
Max video4K@30fps1080p@30fps
Front camera50 MP+525%8 MP
OISYesNo

Battery

Battery comparison: OPPO K15 versus vivo Y31 5G
SpecOPPO K15vivo Y31 5G
Capacity8,000 mAh+23%6,500 mAh
Wired charging80 W+82%44 W

Design

Design comparison: OPPO K15 versus vivo Y31 5G
SpecOPPO K15vivo Y31 5G
Weight205 g+2%209 g
Thickness8.3 mm+1%8.4 mm
IP ratingIP68/IP69IP68/IP69
Frame materialAluminum—

Connectivity

Connectivity comparison: OPPO K15 versus vivo Y31 5G
SpecOPPO K15vivo Y31 5G
5GYesYes
Wi-FiWi-Fi 6Wi-Fi 5
Bluetooth5.44.2
NFCYesNo
USBUSB-C 2.0USB-C 2.0
eSIMNoNo

Software

Software comparison: OPPO K15 versus vivo Y31 5G
SpecOPPO K15vivo Y31 5G
OS at launchAndroid 16 (ColorOS 16)Android 15 (Funtouch OS 15)

Audio

Audio comparison: OPPO K15 versus vivo Y31 5G
SpecOPPO K15vivo Y31 5G
Stereo speakersYesYes
3.5mm jackNoNo

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