Samsung Galaxy S23 Ultra vs Xiaomi 15 Ultra
The Samsung Galaxy S23 Ultra (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 $1199 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 70/100 (a 15-point difference). Key differences: the Xiaomi 15 Ultra has the bigger battery (6000 mAh vs 5000); the main camera is 200 MP vs 50 MP; the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 1,684,869); per DXOMark lab testing, the Xiaomi 15 Ultra has the stronger camera (159 vs 140).
Profile comparison
Category scores
Samsung Galaxy S23 Ultra
Xiaomi 15 Ultra
What makes Samsung Galaxy S23 Ultra better?
- Better main camera: 200MP vs 50MP
- Overall rating 70/100
What makes Xiaomi 15 Ultra better?
- Higher AnTuTu: 3030376 vs 1684869
- Better Geekbench Single: 3050 vs 2004
- Better Geekbench Multi: 10200 vs 5311
- Bigger battery: 6000 vs 5000 mAh
- Faster charging: 90W vs 45W
- Faster wireless charging: 50W vs 15W
- Lighter: 225g vs 234g
- Cheaper at launch: $999 vs $1199
- Higher performance (92/100 vs 75/100)
- Better camera (87/100 vs 73/100)
- Longer battery life (80/100 vs 56/100)
- Better display (90/100 vs 88/100)
Comparison verdict
Comparing the Samsung Galaxy S23 Ultra vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 15 points higher (85/100 vs 70/100). 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 73/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 56/100). Value score: Samsung Galaxy S23 Ultra — 50/100, 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 Ultra (92/100 vs 75/100). In the "display" category, the Xiaomi 15 Ultra and the Samsung Galaxy S23 Ultra are nearly equal (90/100 vs 88/100). In the "camera" category, the Xiaomi 15 Ultra is a bit better (87/100 vs 73/100). In the "battery" category, the Xiaomi 15 Ultra notably outperforms the Samsung Galaxy S23 Ultra (80/100 vs 56/100). In the "portability" category, both devices are on the same level — 29/100.
Specs comparison
| Specification | Samsung Galaxy S23 Ultra | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Gen 2 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1684869 | 3030376 | |
| Geekbench Single | 2004 | 3050 | |
| Geekbench Multi | 5311 | 10200 | |
| Display | 6.8" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 1440x3088 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5000 mAh | 6000 mAh | |
| Charging | 45W | 90W | |
| Wireless charging | 15W | 50W | |
| DXOMark (camera) | 140 | 159 | |
| Main camera | 200 MP | 50 MP | |
| Ultrawide | 12 MP | 50 MP | |
| Telephoto | 10 MP | 50 MP | |
| Front camera | 12 MP | 32 MP | |
| RAM | 8GB / 12GB | 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 13, up to 4 major Android upgrades, One UI 8 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 1750 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 163.4×78.1×8.9 mm | 161.3×75.3×9.4 mm | |
| Weight | 234 g | 225 g | |
| Launch price | $1199 | $999 |
Camera comparison
Samsung Galaxy S23 Ultra
- Main: 200MP f/1.7
- 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 Ultra
- 6.8" AMOLED
- Resolution: 1440x3088
- Refresh rate: 120 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
Samsung Galaxy S23 Ultra
- 5000 mAh
- Wired: 45W
- 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 Ultra and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads Samsung Galaxy S23 Ultra by 44.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $200. Xiaomi 15 Ultra was $200 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Xiaomi 15 Ultra notably outperforms the Samsung Galaxy S23 Ultra (92/100 vs 75/100).
display
In the "display" category, the Xiaomi 15 Ultra and the Samsung Galaxy S23 Ultra are nearly equal (90/100 vs 88/100).
camera
In the "camera" category, the Xiaomi 15 Ultra is a bit better (87/100 vs 73/100).
battery
In the "battery" category, the Xiaomi 15 Ultra notably outperforms the Samsung Galaxy S23 Ultra (80/100 vs 56/100).
portability
In the "portability" category, both devices are on the same level — 29/100.
Frequently asked questions
Which is better: the Samsung Galaxy S23 Ultra or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra is noticeably better than the Samsung Galaxy S23 Ultra — the overall rating gap is 15 points.
What is the rating of the Samsung Galaxy S23 Ultra and the Xiaomi 15 Ultra?
The Samsung Galaxy S23 Ultra has a MobileRank rating of 70/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Samsung Galaxy S23 Ultra or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 73/100).
Which is more powerful: the Samsung Galaxy S23 Ultra or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 75/100).
Should you choose the Samsung Galaxy S23 Ultra over the Xiaomi 15 Ultra?
The Samsung Galaxy S23 Ultra 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.