Samsung Galaxy S23 vs Xiaomi 15 Ultra
The Samsung Galaxy S23 (2023) runs on the Qualcomm Snapdragon 8 Gen 2, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $799 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 66/100 (a 19-point difference). Key differences: the Xiaomi 15 Ultra has the bigger battery (6000 mAh vs 3900); the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 1,656,761); per DXOMark lab testing, the Xiaomi 15 Ultra has the stronger camera (159 vs 133); the Samsung Galaxy S23 is noticeably lighter (168g vs 225g).
Profile comparison
Category scores
Samsung Galaxy S23
Xiaomi 15 Ultra
What makes Samsung Galaxy S23 better?
- Lighter: 168g vs 225g
- Cheaper at launch: $799 vs $999
- Better portability (83/100 vs 29/100)
What makes Xiaomi 15 Ultra better?
- Higher AnTuTu: 3030376 vs 1656761
- Better Geekbench Single: 3050 vs 2004
- Better Geekbench Multi: 10200 vs 5311
- Bigger battery: 6000 vs 3900 mAh
- Faster charging: 90W vs 25W
- Faster wireless charging: 50W vs 15W
- Higher performance (92/100 vs 75/100)
- Better camera (87/100 vs 67/100)
- Longer battery life (80/100 vs 29/100)
- Better display (90/100 vs 82/100)
Comparison verdict
Comparing the Samsung Galaxy S23 vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 19 points higher (85/100 vs 66/100). In the "performance" category, the Xiaomi 15 Ultra leads (92/100 vs 75/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 67/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 29/100). Value score: Samsung Galaxy S23 — 46/100, Xiaomi 15 Ultra — 80/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Xiaomi 15 Ultra notably outperforms the Samsung Galaxy S23 (92/100 vs 75/100). In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 82/100). In the "camera" category, the Xiaomi 15 Ultra notably outperforms the Samsung Galaxy S23 (87/100 vs 67/100). In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the Samsung Galaxy S23 (80/100 vs 29/100). In the "portability" category, the Samsung Galaxy S23 significantly outperforms the Xiaomi 15 Ultra (83/100 vs 29/100).
Specs comparison
| Specification | Samsung Galaxy S23 | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Gen 2 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1656761 | 3030376 | |
| Geekbench Single | 2004 | 3050 | |
| Geekbench Multi | 5311 | 10200 | |
| Display | 6.1" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 2340x1080 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 3900 mAh | 6000 mAh | |
| Charging | 25W | 90W | |
| Wireless charging | 15W | 50W | |
| DXOMark (camera) | 133 | 159 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 12 MP | 50 MP | |
| Telephoto | 10 MP | 50 MP | |
| Front camera | 12 MP | 32 MP | |
| RAM | 8GB | 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 13 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 1750 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 157.8×76.2×7.6 mm | 161.3×75.3×9.4 mm | |
| Weight | 168 g | 225 g | |
| Launch price | $799 | $999 |
Camera comparison
Samsung Galaxy S23
- Main: 50MP f/1.8
- Ultrawide: 12MP
- Telephoto: 10MP
- Front: 12MP
Xiaomi 15 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Samsung Galaxy S23
- 6.1" AMOLED
- Resolution: 2340x1080
- Refresh rate: 120 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
Samsung Galaxy S23
- 3900 mAh
- Wired: 25W
- Wireless: 15W
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared Samsung Galaxy S23 and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads Samsung Galaxy S23 by 45.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $200. Samsung Galaxy S23 was $200 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Xiaomi 15 Ultra notably outperforms the Samsung Galaxy S23 (92/100 vs 75/100).
display
In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 82/100).
camera
In the "camera" category, the Xiaomi 15 Ultra notably outperforms the Samsung Galaxy S23 (87/100 vs 67/100).
battery
In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the Samsung Galaxy S23 (80/100 vs 29/100).
portability
In the "portability" category, the Samsung Galaxy S23 significantly outperforms the Xiaomi 15 Ultra (83/100 vs 29/100).
Frequently asked questions
Which is better: the Samsung Galaxy S23 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra is noticeably better than the Samsung Galaxy S23 — the overall rating gap is 19 points.
What is the rating of the Samsung Galaxy S23 and the Xiaomi 15 Ultra?
The Samsung Galaxy S23 has a MobileRank rating of 66/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Samsung Galaxy S23 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 67/100).
Which is more powerful: the Samsung Galaxy S23 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 75/100).
Should you choose the Samsung Galaxy S23 over the Xiaomi 15 Ultra?
The Samsung Galaxy S23 is a better fit for active users. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.