Samsung Galaxy S21 Ultra vs Galaxy S10

Here we compared two flagship smartphones: the 6.8-inch Samsung Galaxy S21 Ultra (with Exynos 2100) that was released on January 14, 2021, against the Samsung Galaxy S10, which is powered by Exynos 9 Octa 9820 and came out 23 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Samsung Galaxy S21 Ultra
  • The rear camera has a 10x optical zoom
  • Higher display refresh rate – 120 Hz
  • Comes with 1600 mAh larger battery capacity: 5000 vs 3400 mAh
  • Has a 0.7 inch larger screen size
  • Shows 52% longer battery life (31:14 vs 20:33 hours)
  • 50% better performance in AnTuTu Benchmark (766K versus 511K)
  • Newer Bluetooth version (v5.2)
  • Uses a faster type of memory: LPDDR5 2750 MHz
  • Delivers 24% higher peak brightness (1025 against 825 nits)
  • The phone is 1-year and 11-months newer
  • Ready for eSIM technology
Reasons to consider the Samsung Galaxy S10
  • Expandable storage via MicroSD card up to 512GB
  • Weighs 70 grams less
  • Better grip in hands – the body is 5.2 mm narrower
  • Includes a 3.5 mm headphone audio jack port

Review

Display
Screen quality, color accuracy, brightness
Performance
CPU/GPU performance in apps and games
Battery
Battery life, charging type and speed
Camera
Photo and video recording quality
Connectivity
Networks, ports, data transmission
NanoReview score
Final comparison evaluation

Value for money

You can enter your local price of these phones (in USD or any other currency) and click on the "Calculate" button to see which one has a better value for money.
Price

Tests and specifications

Comparison table of technical specifications and tests

Display

Type Dynamic AMOLED Super AMOLED
Size 6.8 inches 6.1 inches
Resolution 1440 x 3200 pixels 1440 x 3040 pixels
Aspect ratio 20:9 19:9
PPI 515 ppi 551 ppi
Refresh rate 120 Hz 60 Hz
Max rated brightness 1500 nits 1215 nits
HDR support Yes, HDR10+ Yes, HDR10+
Screen protection Gorilla Glass Victus Corning Gorilla Glass 6
Screen-to-body ratio 89.8% 88.08%
Display features - DCI-P3
- Always-On Display
- DCI-P3
- Always-On Display
Display tests
RGB color space - 98.1%
PWM - 240 Hz
Response time - 4.8 ms
Contrast - ∞ Infinity
Peak brightness test (auto)
1025 nits
825 nits
Sources: NotebookCheck [3], [4]

Design and build

Height 165.1 mm (6.5 inches) 149.9 mm (5.9 inches)
Width 75.6 mm (2.98 inches) 70.4 mm (2.77 inches)
Thickness 8.9 mm (0.35 inches) 7.8 mm (0.31 inches)
Weight 227 gramm (8.01 oz) 157 gramm (5.54 oz)
Waterproof IP68 IP68
Rear material Glass Glass
Frame material Metal Metal
Colors Black, Silver, Gray, Blue White, Black, Blue, Green
Fingerprint scanner Yes, in-display Yes, in-display
Screen-to-body ratio
89.8%
88.08%

Performance

Tests of Samsung Galaxy S21 Ultra and Samsung Galaxy S10 in the benchmarks
SoC
Chipset Samsung Exynos 2100 Samsung Exynos 9 Octa 9820
Max. clock 2840 MHz 2730 MHz
CPU cores 8 (1 + 3 + 4) 8 (2 + 2 + 4)
Architecture - 4 cores at 2.2 GHz: Cortex-A55
- 3 cores at 2.8 GHz: Cortex-A78
- 1 core at 2.9 GHz: Cortex-X1
- 4 cores at 1.9 GHz: Cortex-A55
- 2 cores at 2.3 GHz: Cortex-A75
- 2 cores at 2.7 GHz: Mongoose
L3 cache - 2 MB
Lithography process 5 nanometers 8 nanometers
Graphics Mali-G78 MP14 Mali G76 MP12
GPU clock 760 MHz 720 MHz
FLOPS - ~652 GFLOPS
Memory
RAM size 12, 16 GB 8 GB
Memory type LPDDR5 LPDDR4X
Memory clock 2750 MHz 2133 MHz
Channels 2 2
Storage
Storage size 128, 256, 512 GB 128 GB
Storage type UFS 3.1 UFS 2.1
Memory card No MicroSD
Memory card max. size - Up to 512 GB

Benchmarks

Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
3525
2060
AnTuTu Benchmark 9
766723
511287
CPU 198194 123447
GPU 290543 191749
Memory 132758 85737
UX 138398 108901
Total score 766723 511287
3DMark Wild Life Performance
5221
3201
Stability 69% 82%
Graphics test 31 FPS 19 FPS
Graphics score 5221 3201
PCMark 3.0 score - 8734
Sources: 3DMark [3], [4]

Software

Operating system Android 11 (Can be upgraded to Android 12) Android 9.0 (Can be upgraded to Android 12)
ROM One UI 4.1 One UI 4.0
OS size 26.4 GB 9.5 GB

Battery

Specifications
Capacity 5000 mAh 3400 mAh
Charge power 25 W 15 W
Battery type Li-Ion Li-Po
Replaceable No No
Wireless charging Yes (15 W) Yes, Qi/PMA (9 W)
Reverse charging Yes, (wireless) Yes, (wireless)
Fast charging Yes (54% in 30 min) Yes, Samsung Adaptive Fast Charge (50% in 30 min)
Full charging time 1:11 hr 1:35 hr
Battery life tests
Web browsing 10:13 hr 06:03 hr
Watching video 15:32 hr 10:32 hr
Gaming 05:26 hr 03:11 hr
Standby 98 hr 70 hr
General battery life
31:14 hr
20:33 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 108 megapixels 12 megapixels
Image resolution 12000 x 9000 4000 x 3000
Zoom Optical, 10x Optical, 2x
Flash Dual LED Dual LED
Stabilization Optical Optical
8K video recording Up to 24FPS No
4K video recording Up to 60FPS Up to 60FPS
1080p video recording Up to 60FPS Up to 240FPS
Slow motion 960 FPS (720p) 960 FPS (720p)
Angle of widest lens 120° 123°
Lenses 4 (108 MP + 10 MP + 10 MP + 12 MP) 3 (12 MP + 12 MP + 16 MP)
Wide (main) lens - 108 MP
- Aperture: f/1.8
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/1.33", Samsung S5KHM3 (ISOCELL Plus CMOS)
- Laser autofocus
- Optical stabilization
- 12 MP
- Aperture: f/1.5 - 2.4
- Focal length: 26 mm
- Pixel size: 1.4 micron
- Sensor: 1/2.55", Samsung SAK2L4 (ISOCELL CMOS)
- Phase autofocus (Dual Pixel)
- Optical stabilization
Telephoto lens - 10 MP
- Aperture: f/4.9
- Focal length: 240 mm
- Pixel size: 1.22 micron
- Sensor: 1/2.65", Samsung S5K3J1 (ISOCELL CMOS)
- Phase autofocus (Dual Pixel)
- Optical stabilization
- 12 MP
- Aperture: f/1.5
- Focal length: 52 mm
- Pixel size: 1 micron
- Sensor: 1/3.6", Samsung S5K3M3 (ISOCELL CMOS)
- Phase autofocus
- Optical stabilization
Ultra-wide lens - 12 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.4 micron
- Sensor: 1/2.55", Sony IMX563 (Exmor-RS CMOS)
- Phase autofocus (Dual Pixel)
- 16 MP
- Aperture: f/2.2
- Focal length: 12 mm
Camera features - Bokeh mode
- Pro mode
- RAW support
- Bokeh mode
- Pro mode
- RAW support
Samples Photo samples of Samsung Galaxy S21 Ultra from DxOMark -
Selfie camera
Megapixels 40 megapixels 10 megapixels
Image resolution 7864 x 5200 4320 x 2432
Aperture f/2.2 f/1.9
Focal length 26 mm 26 mm
Pixel size 0.7 microns 1.22 microns
Sensor type ISOCELL CMOS CMOS
Sensor size 1/2.65" 1/2.65"
Video resolution 2160p (4K) at 60 FPS 2160p (4K) at 60 FPS

DxOMark camera tests

Photo quality
Video quality
Generic camera score

Connectivity

Wi-Fi standard Wi-Fi 6E (802.11 a/b/g/n/ac/ax) Wi-Fi 6 (802.11 a/b/g/n/ax)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
- Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
Bluetooth version 5.2 5
Bluetooth features LE, A2DP PBAP/PAB, PAN, OPP, MAP, LE, HSP, HID, HFP, DIP, AVRCP, A2DP
USB type USB Type-C USB Type-C
USB version 3.2 3.1
USB features - Charging
- USB-Storage mode
- USB-Host mode
- OTG
- Charging
- USB-Storage mode
- OTG
GPS GPS, GLONASS, Beidou, Galileo GPS, GLONASS, Beidou, Galileo
NFC* Yes Yes
Infrared port No No
Network
Number of SIM* 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* Yes No
Hybrid slot No Yes
LTE Cat* 24 20
5G support Yes No

Sound

Speakers Stereo Stereo
Headphone audio jack No Yes
FM radio No No
Dolby Atmos Yes Yes
Speakers test
Max. loudness

Other

Category Flagship Flagship
Announced January 2021 February 2019
Release date February 2021 March 2019
SAR (head) 0.71 W/kg 0.48 W/kg
SAR (body) 1.58 W/kg 1.59 W/kg
Sensors - Hall-effect sensor
- Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Hall-effect sensor
- Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

After analyzing all the data, we think that the Samsung Galaxy S21 Ultra is definitely a better buy.

Cast your vote

So, which phone would you choose?
64 (64%)
36 (36%)
Total votes: 100

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