Samsung Galaxy S23 vs S21 Ultra
69
out of 100
VS
62
out of 100
Here we compared two flagship smartphones: the 6.1-inch Samsung Galaxy S23 (with Snapdragon 8 Gen 2 Mobile Platform for Galaxy) that was released on February 1, 2023, against the Samsung Galaxy S21 Ultra, which is powered by Exynos 2100 and came out 2 years and 1 month before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.
Select the amount of RAM to evaluate performance and value for money more precisely
Key differences
Reasons to consider the Samsung Galaxy S23
- 59% better performance in AnTuTu Benchmark (1712K versus 1074K)
- Better camera quality (According to DxOMark rating)
- Newer Bluetooth version (v5.3)
- Delivers 18% higher peak brightness (1191 against 1013 nits)
- More recent OS version: Android 16 versus 15
- The phone is 2 years and 1 month newer
- Faster storage type - UFS 4.0 versus UFS 3.1
- Weighs 59 grams less
- 34% faster in single-core GeekBench 6 test: 1987 and 1486 points
Reasons to consider the Samsung Galaxy S21 Ultra
- The rear camera has a 10x optical zoom
- Has a 0.7 inch larger screen size
- Comes with 1100 mAh larger battery capacity: 5000 vs 3900 mAh
- Has 2 SIM card slots
- 21% higher pixel density (515 vs 425 PPI)
Review
Display
Screen quality, color accuracy, brightness
Camera
Photo and video recording quality
Performance
CPU and memory performance (apps, system)
Gaming
Capabilities for playing modern games
Battery
Battery life, charging type and speed
Connectivity
Networks, ports, data transmission
Select your primary usage scenario to get a more accurate DeviceFacts Score
Value for money (Beta)
Tests and specifications
Comparison table of technical specifications and testsDisplay
| Type | Dynamic AMOLED | Dynamic AMOLED |
| Size | 6.1 inches | 6.8 inches |
| Resolution | 1080 x 2340 pixels | 1440 x 3200 pixels |
| Aspect ratio | 19.5:9 | 20:9 |
| PPI | 425 ppi | 515 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Adaptive refresh rate | Yes (24-120 Hz) | Yes (10-120 Hz) |
| Max rated brightness | 1200 nits | 1500 nits |
| Max rated brightness in HDR | 1750 nits | - |
| HDR support | Yes, HDR10+ | Yes, HDR10+ |
| Screen protection | Gorilla Glass Victus 2 | Gorilla Glass Victus |
| Screen-to-body ratio | 88% | 89.5% |
| Display features | - DCI-P3 - Always-On Display |
- DCI-P3 - Always-On Display |
| RGB color space | 98.9% | - |
| PWM | 240 Hz | - |
| Response time | 1 ms | - |
| Contrast | ∞ Infinity | - |
Screen space comparison
Galaxy S21 Ultra
6.8″ (20:9 ratio) = 17.3 in2
Galaxy S23
6.1″ (19.5:9 ratio) = 14.2 in2
~22% more screen space
Peak brightness test (auto)
Design and build
| Height | 146.3 mm (5.76 inches) | 165.1 mm (6.5 inches) |
| Width | 70.9 mm (2.79 inches) | 75.6 mm (2.98 inches) |
| Thickness | 7.6 mm (0.3 inches) | 8.9 mm (0.35 inches) |
| Weight | 168 g (5.93 oz) | 227 g (8.01 oz) |
| Waterproof | IP68 | IP68 |
| Advanced cooling | Vapor chamber | - |
| Rear material | Glass | Glass |
| Frame material | Metal | Metal |
| Colors | White, Black, Gray, Green, Purple, Yellow | Black, Silver, Gray, Blue |
| Fingerprint scanner | Yes, in-display | Yes, in-display |
Screen-to-body ratio
Performance
| Chipset | Snapdragon 8 Gen 2 Mobile Platform for Galaxy | Samsung Exynos 2100 |
| Max clock | 3360 MHz | 2900 MHz |
| CPU cores | 8 (1 + 2 + 2 + 3) | 8 (1 + 3 + 4) |
| Architecture | - 3 cores at 2 GHz: Cortex-A510 - 2 cores at 2.8 GHz: Cortex-A710 - 2 cores at 2.8 GHz: Cortex-A715 - 1 core at 3.2 GHz: Cortex-X3 |
- 4 cores at 2.2 GHz: Cortex-A55 - 3 cores at 2.81 GHz: Cortex-A78 - 1 core at 2.91 GHz: Cortex-X1 |
| L3 cache | 8 MB | - |
| Manufacturing | TSMC | Samsung |
| Lithography process | 4 nanometers | 5 nanometers |
| Neural processor (NPU) | Hexagon | Yes |
| Graphics | Adreno 740 | Mali-G78 MP14 |
| GPU shading units | 1536 | 448 |
| GPU clock | 680 MHz | 854 MHz |
| FLOPS | ~2089 GFLOPS | ~765.2 GFLOPS |
Benchmarks
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Compute Score (GPU)
| Compute Score (GPU) | 9410 | 6870 |
| Single-core score | 1987 | 1486 |
| Multi-core score | 5171 | 3800 |
AnTuTu Benchmark 11
| CPU | 587063 | 420330 |
| GPU | 434955 | 186151 |
| Memory | 275390 | 193925 |
| UX | 414985 | 273776 |
| Total score | 1712393 | 1074182 |
| Samples | [29 tests] | [11 tests] |
3DMark Steel Nomad Light
| Stability | 76% | - |
| Graphics test | 8 FPS | - |
| Graphics score | 1069 | - |
3DMark Solar Bay
| Stability | 73% | - |
| Graphics test | 20 FPS | - |
| Section 1 | 23 FPS | - |
| Section 2 | 20 FPS | - |
| Section 3 | 18 FPS | - |
| Graphics score | 5348 | - |
3DMark Wild Life Extreme
| Stability | 61% | - |
| Graphics test | 21 FPS | - |
| Graphics score | 3669 | - |
PCMark 3.0
| Web score | 15188 | - |
| Video editing | 7873 | - |
| Photo editing | 33939 | - |
| Data manipulation | 12935 | - |
| Writing score | 19390 | - |
Recent User Tests
Samsung Galaxy S23
| Date | Benchmark | Result |
|---|---|---|
| 📘 2026-10-13 (Ct) | AnTuTu 12 | 1868238 |
| 📘 2026-09-21 (Mil) | AnTuTu 12 | 1763249 |
| 📘 2026-09-16 (Fluffyicebite:3) | AnTuTu 12 | 1835927 |
| 📘 2026-09-09 -> Rafarobbie22 | AnTuTu 11 | 1708074 |
| 📘 2026-09-09 (Rafa) | AnTuTu 11 | 1708074 |
Samsung Galaxy S21 Ultra
| Date | Benchmark | Result |
|---|---|---|
| 📘 2026-10-06 (Nurik) | AnTuTu 12 | 900228 |
| 📘 2026-09-30 -> fh_hxx19 | AnTuTu 12 | 1191592 |
| 📘 2026-09-30 -> fh_hxx19 | AnTuTu 12 | 1191592 |
| 📘 2026-07-22 (Squizzyyy) | AnTuTu 11 | 857016 |
| 📘 2026-06-02 (My name) | AnTuTu 11 | 1271841 |
Memory
| RAM size | 8 GB | 8 GB |
| Memory type | LPDDR5X | LPDDR5 |
| Memory clock | - | 2750 MHz |
| Channels | 4 | 2 |
| Storage size | 128 GB | 128 GB |
| Storage type | UFS 4.0 | UFS 3.1 |
| Memory card | No | No |
Software
| Operating system | Android 13 (Can be upgraded to Android 16) | Android 11 (Can be upgraded to Android 15) |
| ROM | One UI 8.0 | One UI 7.0 |
| OS size | 29.7 GB | 26.4 GB |
| OS updates | 4 years | 2 years |
| Security updates | 5 years | 4 years |
Battery
| Capacity | 3900 mAh | 5000 mAh |
| Max charge power | 25 W | 25 W |
| Battery type | Li-Ion | Li-Ion |
| Replaceable | No | No |
| Wireless charging | Yes (10 W) | Yes (15 W) |
| Reverse charging | Yes, (wireless) | Yes, (wireless) |
| Bypass charging | Yes | - |
| Fast charging | Yes (57% in 30 min) | Yes (54% in 30 min) |
| Full charging time | 1:16 hr | 1:11 hr |
| Web browsing | 08:12 hr | 07:58 hr |
| Watching video | 13:41 hr | 13:59 hr |
| Gaming | 05:20 hr | 05:14 hr |
| Standby | 109 hr | 111 hr |
General battery life
Main camera
| Matrix | 50 megapixels | 108 megapixels |
| Image resolution | 8160 x 6120 | 12000 x 9000 |
| Zoom | Optical, 3x | Optical, 10x |
| Flash | LED | Dual LED |
| Stabilization | Optical | Optical |
| 8K video recording | Up to 30FPS | Up to 24FPS |
| 4K video recording | Up to 60FPS | Up to 60FPS |
| 1080p video recording | Up to 120FPS | Up to 60FPS |
| Slow motion | 960 FPS (1080p) | 960 FPS (720p) |
| Angle of widest lens | 120° | 120° |
| Lenses | 1) Standard: 50 MP 2) Telephoto: 10 MP 3) Ultrawide: 12 MP |
1) Standard: 108 MP 2) Telephoto: 10 MP 3) Telephoto: 10 MP 4) Ultrawide: 12 MP |
| Camera features | - Bokeh mode - Pro mode - RAW support |
- Bokeh mode - Pro mode - RAW support |
| Image resolution | 50 MP | 108 MP |
| Aperture | f/1.8 | f/1.8 |
| Focal length | 23 mm | 26 mm |
| Sensor | Samsung S5KGN3 | Samsung S5KHM3 |
| Sensor size | 1/1.57" (≈ 0.64 inch) | 1/1.33" (≈ 0.75 inch) |
| Pixel size | 1 micron | 0.8 micron |
| Autofocus | Phase autofocus (Dual Pixel) | Laser autofocus |
| Stabilization | Optical | Optical |
| Image resolution | 10 MP | 10 MP |
| Aperture | f/2.4 | f/4.9 |
| Focal length | 70 mm | 240 mm |
| Sensor | Samsung S5K3K1 | Samsung S5K3J1 |
| Sensor size | 1/3.94" (≈ 0.25 inch) | 1/2.65" (≈ 0.38 inch) |
| Pixel size | 1 micron | 1.22 micron |
| Stabilization | Optical | Optical |
| Image resolution | 12 MP | 12 MP |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 13 mm | 13 mm |
| Sensor | Sony IMX564 | Sony IMX563 |
| Sensor size | 1/2.55" (≈ 0.39 inch) | 1/2.55" (≈ 0.39 inch) |
| Pixel size | 1.4 micron | 1.4 micron |
| Stabilization | Digital | Digital |
DxOMark main camera tests
Photo quality
Video quality
Generic main camera score
| Bokeh | 70 | 70 |
| Preview | 72 | 67 |
| Zoom | 126 | 106 |
| Samples | Photo samples of Samsung Galaxy S23 from DxOMark | Photo samples of Samsung Galaxy S21 Ultra from DxOMark |
Selfie camera
| Megapixels | 12 megapixels | 40 megapixels |
| Image resolution | 4000 x 3000 | 7864 x 5200 |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 26 mm | 26 mm |
| Sensor | Samsung S5K3LU | Samsung S5KGH1 |
| Sensor size | 1/3.24" (≈ 0.31 inch) | 1/2.65" (≈ 0.38 inch) |
| Pixel size | 1.12 micron | 0.7 micron |
| Autofocus | Phase autofocus (Dual Pixel) | Phase autofocus |
| Stabilization | Digital | Digital |
| Video resolution | 2160p (4K) at 60 FPS | 2160p (4K) at 60 FPS |
| Depth sensor (TOF 3D) | No | No |
DxOMark front camera
| Photo | - | 133 |
| Video | - | 140 |
Connectivity
| Wi-Fi standard | Wi-Fi 6E (802.11 a/b/g/n/ac/ax) | Wi-Fi 6E (802.11 a/b/g/n/ac/ax) |
| Wi-Fi features | - Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
- Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
| Bluetooth version | 5.3 | 5.2 |
| Bluetooth features | LE | LE, A2DP |
| USB type | USB Type-C | USB Type-C |
| USB version | 3.2 | 3.2 |
| USB features | - Charging - USB-Storage mode - OTG |
- Charging - USB-Storage mode - USB-Host mode - OTG |
| DisplayPort | Yes, DP 1.2 | - |
| GPS | GPS, GLONASS, Beidou, Galileo, QZSS | GPS, GLONASS, Beidou, Galileo |
| NFC* | Yes | Yes |
| Infrared port | No | No |
| Number of SIM* | 1 | 2 |
| Type of SIM card | Nano | Nano |
| Multi SIM mode | Standby | Standby |
| eSIM support* | Yes | Yes |
| Hybrid slot | No | No |
| LTE Cat* | 20 | 24 |
| 5G support | Yes | Yes |
Sound
| Speakers | Stereo | Stereo |
| Headphone audio jack | No | No |
| FM radio | No | No |
| Dolby Atmos | Yes | Yes |
Speakers test
Max loudness
Other
| Category | Flagship | Flagship |
| Announced | February 2023 | January 2021 |
| Release date | February 2023 | February 2021 |
| Launch price (MSRP) | $799 | $1200 |
| Successor | - Samsung Galaxy S26 Plus (Snapdragon) | - Samsung Galaxy S22 Ultra |
| SAR (head) | 0.96 W/kg | 0.71 W/kg |
| SAR (body) | 1.3 W/kg | 1.58 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 |
| Bundled charger | Not included | - |
Further details
Notes on Galaxy S23:
- The 128GB version uses slower UFS 3.1 memory, while the 256GB and 512GB models have UFS 4.0.
*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 S23 is definitely a better buy.
Cast your vote
Total votes: 627
