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InnoReviews

OPPO K13 5G vs vivo Y31d

WINNER
OPPO K13 5G
46.6Inno Score
VS
vivo Y31d
41.8Inno Score
28.9Performance28.9
53.2Display42.5
30.7Camera29
79.8Battery70.9
52Features46.7
6 spec wins — OPPO K13 5G4 spec wins — vivo Y31d

InnoReviews verdict

OPPO K13 5G wins this phone face-off, 46.6 to 41.8, pulling ahead mainly in display (+11) and battery (+9). vivo Y31d still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the OPPO K13 5G

  • Stronger display score: 53 vs 43
  • Stronger battery score: 80 vs 71
  • Stronger features score: 52 vs 47
  • 100% higher Front camera: 16 MP vs 8 MP
  • 82% higher Wired charging: 80 W vs 44 W

Reasons to pick the vivo Y31d

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

Display

Display comparison: OPPO K13 5G versus vivo Y31d
SpecOPPO K13 5Gvivo Y31d
Screen size6.67 ″6.75 ″+1%
Panel typeAMOLEDIPS LCD
Resolution2400x1080720x1570
Pixel density394 ppi+54%256 ppi
Refresh rate120 Hz120 Hz
Peak brightness1,200 nits1,250 nits+4%
Screen-to-body92.2 %+8%85.3 %

Performance

Performance comparison: OPPO K13 5G versus vivo Y31d
SpecOPPO K13 5Gvivo Y31d
ChipsetSnapdragon 6 Gen 4Qualcomm Snapdragon 6s 4G Gen 2
RAM (max)8 GB8 GB
Storage options128GB / 256GB128/256GB
Storage typeUFS 3.1UFS 2.2

Camera

Camera comparison: OPPO K13 5G versus vivo Y31d
SpecOPPO K13 5Gvivo Y31d
Main camera50 MP50 MP
Main aperturef/1.8f/2.0
Max video4K@30fps1080p@30fps
Front camera16 MP+100%8 MP
OISNoNo

Battery

Battery comparison: OPPO K13 5G versus vivo Y31d
SpecOPPO K13 5Gvivo Y31d
Capacity7,000 mAh7,200 mAh+3%
Wired charging80 W+82%44 W

Design

Design comparison: OPPO K13 5G versus vivo Y31d
SpecOPPO K13 5Gvivo Y31d
Weight208 g+5%219 g
Thickness8.5 mm8.4 mm+1%
IP ratingIP65IP68/IP69
Frame materialPlasticPlastic

Connectivity

Connectivity comparison: OPPO K13 5G versus vivo Y31d
SpecOPPO K13 5Gvivo Y31d
5GYesNo
Wi-FiWi-Fi 6Wi-Fi 5
Bluetooth5.25.1
NFCNoNo
USBUSB-CUSB-C 2.0
eSIMNoNo

Software

Software comparison: OPPO K13 5G versus vivo Y31d
SpecOPPO K13 5Gvivo Y31d
OS at launchAndroid 15 (ColorOS 15)Android 16 (OriginOS 6)
OS update pledge2 years—

Audio

Audio comparison: OPPO K13 5G versus vivo Y31d
SpecOPPO K13 5Gvivo Y31d
Stereo speakersYesYes
3.5mm jackNoNo

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