We and our partners use cookies to give you the best online experience, including to personalise advertising and content. Data about your interaction with this site and the ads shown to you may be shared with companies involved in the delivery and/or personalisation of ads on this site and elsewhere online.

OnePlus 9 Pro vs Samsung Galaxy S21 Ultra 5G

2.9 in
6.43 in
OnePlus 9 Pro Mobile Phone
OnePlus 9 Pro
2.98 in
6.36 in
Samsung Galaxy S21 Ultra 5G Mobile Phone
Samsung Galaxy S21 Ultra 5G
Editiorial reviews
15
4.3 out of 5
10 user ratings
5 stars
40 %
4 stars
60 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
16
4.4 out of 5
10 user ratings
5 stars
60 %
4 stars
40 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
User rating
39
3.9 out of 5
39 user ratings
5 stars
20 %
4 stars
58 %
3 stars
12 %
2 stars
7 %
1 stars
0 %
43
4.3 out of 5
43 user ratings
5 stars
46 %
4 stars
39 %
3 stars
13 %
2 stars
0 %
1 stars
0 %

Video Comparisons (2)

powered byYouTube

Full Comparison

Hardware

OnePlus 9 ProOnePlus 9 Pro
Samsung Galaxy S21 Ultra 5GSamsung Galaxy S21 Ultra 5G
Operating system
OxygenOS
Android 11
CPU cores8-core8-core
CPU modelQualcomm Snapdragon 888Samsung Exynos 2100
RAM memory
  • 12 GB
  • 8 GB
  • 12 GB
  • 16 GB

Display

OnePlus 9 ProOnePlus 9 Pro
Samsung Galaxy S21 Ultra 5GSamsung Galaxy S21 Ultra 5G
Screen size6.7 in6.8 in
Number of colors1.07 billion colours16.7M
Panel typeOLEDOLED
Resolution3216 x 1440 px3200 x 1440 px
TechnologyFluid AmoledInfinity-O Dynamic AMOLED 2X
Pixel density525.0 ppi515.0 ppi
Screen material
Corning Gorilla Glass
Corning Gorilla Glass Victus

Rear camera

OnePlus 9 ProOnePlus 9 Pro
Samsung Galaxy S21 Ultra 5GSamsung Galaxy S21 Ultra 5G
Sensor size (second camera)1/1.56"1/1.33"
Primary sensor resolution48.0 Mpx12.0 Mpx
Resolution (second camera)50.0 Mpx108.0 Mpx
Resolution (third camera)8.0 Mpx10.0 Mpx
Resolution (fourth camera)2.0 Mpx10.0 Mpx
Lens aperture (second camera)F/2.2F/1.8
Lens aperture (third camera)F/2.4F/2.4
Focus adjustmentAutomaticAutomatic

Front camera

OnePlus 9 ProOnePlus 9 Pro
Samsung Galaxy S21 Ultra 5GSamsung Galaxy S21 Ultra 5G
Primary resolution16.0 Mpx40.0 Mpx
Focus adjustmentAutomaticAutomatic
Lens apertureF/2.4F/2.2

Storage

OnePlus 9 ProOnePlus 9 Pro
Samsung Galaxy S21 Ultra 5GSamsung Galaxy S21 Ultra 5G
Internal storage
  • 128 GB
  • 256 GB
  • 128 GB
  • 256 GB
  • 512 GB

Dimensions

OnePlus 9 ProOnePlus 9 Pro
Samsung Galaxy S21 Ultra 5GSamsung Galaxy S21 Ultra 5G
Height6.43 in6.36 in
Width2.9 in2.98 in
Depth0.34 in0.35 in
Weight6.95 oz8.01 oz

Sensors

OnePlus 9 ProOnePlus 9 Pro
Samsung Galaxy S21 Ultra 5GSamsung Galaxy S21 Ultra 5G
Accelerometeryesyes
Proximityyesyes
Ambient light sensoryesyes
Gyroscopeyesyes

Connectivity

OnePlus 9 ProOnePlus 9 Pro
Samsung Galaxy S21 Ultra 5GSamsung Galaxy S21 Ultra 5G
Sim card sizeNano SIM
  • Nano SIM
  • Electronic SIM card

Cellular

OnePlus 9 ProOnePlus 9 Pro
Samsung Galaxy S21 Ultra 5GSamsung Galaxy S21 Ultra 5G
Data transmission
  • LTE Advanced
  • FDD-LTE
  • TDD-LTE
  • 5G NR FR1
  • 5G NR
  • 5G NR FR1
  • FDD-LTE
  • HSPA+
  • HSUPA
  • LTE
  • TDD-LTE
  • FDD-LTE
  • TDD-LTE
  • 5G NR FR1
Navigation system
  • GPS
  • A-GPS
  • GLONASS
  • BeiDou
  • Galileo
  • GPS
  • GLONASS
  • BeiDou
  • Galileo
UMTS frequences
  • 2100 MHz
  • 1900 MHz
  • 1700 MHz
  • 850 MHz
  • 900 MHz
  • 1700 MHz
  • 800 MHz
  • 2100 MHz
  • 1900 MHz
  • 1700 MHz
  • 850 MHz
  • 900 MHz

Battery

OnePlus 9 ProOnePlus 9 Pro
Samsung Galaxy S21 Ultra 5GSamsung Galaxy S21 Ultra 5G
Battery capacity4500.0 mAh5000.0 mAh
Wireless charging yesyes
Wireless charging standard
  • Qi
  • Warp Charge 50 Wireless
  • WPC
  • Qi
  • Fast Wireless Charging 2.0
  • Wireless PowerShare

Pros & Cons

Pros
      Cons

          Often compared with OnePlus 9 Pro

          Often compared with Samsung Galaxy S21 Ultra 5G