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InnoReviews

OPPO F31 5G vs Samsung Galaxy S21 Ultra

OPPO F31 5G
47Inno Score
VS
WINNER
Samsung Galaxy S21 Ultra
53.9Inno Score
28.9Performance37.2
55.2Display56.3
30.7Camera72
79.8Battery46.4
52Features78.7
4 spec wins — OPPO F31 5G9 spec wins — Samsung Galaxy S21 Ultra

InnoReviews verdict

Samsung Galaxy S21 Ultra wins this phone face-off, 53.9 to 47, pulling ahead mainly in camera (+41) and features (+27). OPPO F31 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 F31 5G

  • Stronger battery score: 80 vs 46
  • 220% higher Wired charging: 80 W vs 25 W
  • 40% higher capacity: 7,000 mAh vs 5,000 mAh
  • 19% lower weight: 185 g vs 228 g
  • 10% lower thickness: 8 mm vs 8.9 mm

Reasons to pick the Samsung Galaxy S21 Ultra

  • Stronger performance score: 37 vs 29
  • Stronger camera score: 72 vs 31
  • Stronger features score: 79 vs 52
  • 150% higher Front camera: 40 MP vs 16 MP
  • 116% higher Main camera: 108 MP vs 50 MP

Display

Display comparison: OPPO F31 5G versus Samsung Galaxy S21 Ultra
SpecOPPO F31 5GSamsung Galaxy S21 Ultra
Screen size6.57 ″6.8 ″+4%
Panel typeAMOLEDLTPO AMOLED
Resolution2372x10803200x1440
Pixel density397 ppi515 ppi+30%
Refresh rate120 Hz120 Hz
Peak brightness1,400 nits1,500 nits+7%
Screen-to-body93 %—

Performance

Performance comparison: OPPO F31 5G versus Samsung Galaxy S21 Ultra
SpecOPPO F31 5GSamsung Galaxy S21 Ultra
ChipsetDimensity 6300Samsung Exynos 2100
AnTuTu—783,817Bottom 22%
AnTuTu 11 (CPU)—263,424Bottom 17%
AnTuTu 11 (GPU)—126,989Bottom 33%
AnTuTu 11 (Memory)—165,563Bottom 35%
AnTuTu 11 (UX)—227,841Bottom 20%
Geekbench 6 (single)—1,430Top 46%
Geekbench 6 (multi)—3,550Bottom 50%
RAM (max)8 GB12 GB+50%
Storage options128GB / 256GB128GB / 256GB / 512GB
Storage typeUFS 2.2UFS 3.1

Camera

Camera comparison: OPPO F31 5G versus Samsung Galaxy S21 Ultra
SpecOPPO F31 5GSamsung Galaxy S21 Ultra
Main camera50 MP108 MP+116%
Main aperturef/1.8f/1.8
Ultra-wide—12 MP
Telephoto—10 MP
Optical zoom—10 x
Max video1080p@60fps8K@24fps
Front camera16 MP40 MP+150%
OIS—Yes

Battery

Battery comparison: OPPO F31 5G versus Samsung Galaxy S21 Ultra
SpecOPPO F31 5GSamsung Galaxy S21 Ultra
Capacity7,000 mAh+40%5,000 mAh
Wired charging80 W+220%25 W
Wireless charging—15 W

Design

Design comparison: OPPO F31 5G versus Samsung Galaxy S21 Ultra
SpecOPPO F31 5GSamsung Galaxy S21 Ultra
Weight185 g+19%228 g
Thickness8 mm+10%8.9 mm
IP ratingIP66/IP68/IP69IP68
Frame materialAluminumAluminum

Connectivity

Connectivity comparison: OPPO F31 5G versus Samsung Galaxy S21 Ultra
SpecOPPO F31 5GSamsung Galaxy S21 Ultra
5GYesYes
Wi-FiWi-Fi 5Wi-Fi 6E
Bluetooth5.45.2
NFCNoYes
USBUSB-C 2.0USB-C 3.2
eSIMNoYes

Software

Software comparison: OPPO F31 5G versus Samsung Galaxy S21 Ultra
SpecOPPO F31 5GSamsung Galaxy S21 Ultra
OS at launchAndroid 15 (ColorOS 15)Android 11 (One UI 3.1)
OS update pledge2 years4 years+100%

Audio

Audio comparison: OPPO F31 5G versus Samsung Galaxy S21 Ultra
SpecOPPO F31 5GSamsung Galaxy S21 Ultra
Stereo speakersYesYes
3.5mm jackNoNo

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