Samsung Galaxy S21 Ultra vs Xiaomi Mix Flip 2
The Samsung Galaxy S21 Ultra (2021) runs on the Samsung Exynos 2100, while the Xiaomi Mix Flip 2 (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $1199 and $830. By overall MobileRank rating, the Xiaomi Mix Flip 2 leads — 74/100 vs 61/100 (a 13-point difference). Key differences: the Xiaomi Mix Flip 2 has the bigger battery (5165 mAh vs 5000); the main camera is 108 MP vs 50 MP; the Xiaomi Mix Flip 2 is faster in AnTuTu (3,126,402 vs 1,074,182); the Xiaomi Mix Flip 2 is noticeably lighter (199g vs 228g).
Profile comparison
Category scores
Samsung Galaxy S21 Ultra
Xiaomi Mix Flip 2
What makes Samsung Galaxy S21 Ultra better?
- Better main camera: 108MP vs 50MP
- Better display (89/100 vs 85/100)
What makes Xiaomi Mix Flip 2 better?
- Higher AnTuTu: 3126402 vs 1074182
- Better Geekbench Single: 3013 vs 1435
- Better Geekbench Multi: 9287 vs 3555
- Bigger battery: 5165 vs 5000 mAh
- Faster charging: 67W vs 25W
- Lighter: 199g vs 228g
- Cheaper at launch: $830 vs $1199
- Higher performance (91/100 vs 63/100)
- Better camera (57/100 vs 55/100)
- Longer battery life (56/100 vs 52/100)
- Better portability (64/100 vs 33/100)
Comparison verdict
Comparing the Samsung Galaxy S21 Ultra vs the Xiaomi Mix Flip 2, the Xiaomi Mix Flip 2 scores 13 points higher (74/100 vs 61/100). In the "performance" category, the Xiaomi Mix Flip 2 leads (91/100 vs 63/100). Value score: Samsung Galaxy S21 Ultra — 32/100, Xiaomi Mix Flip 2 — 62/100; 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 Mix Flip 2 notably outperforms the Samsung Galaxy S21 Ultra (91/100 vs 63/100). In the "display" category, the Samsung Galaxy S21 Ultra and the Xiaomi Mix Flip 2 are nearly equal (89/100 vs 85/100). In the "camera" category, the Xiaomi Mix Flip 2 and the Samsung Galaxy S21 Ultra are nearly equal (57/100 vs 55/100). In the "battery" category, the Xiaomi Mix Flip 2 and the Samsung Galaxy S21 Ultra are nearly equal (56/100 vs 52/100). In the "portability" category, the Xiaomi Mix Flip 2 significantly outperforms the Samsung Galaxy S21 Ultra (64/100 vs 33/100).
Specs comparison
| Specification | Samsung Galaxy S21 Ultra | Xiaomi Mix Flip 2 | |
|---|---|---|---|
| Processor | Samsung Exynos 2100 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1074182 | 3126402 | |
| Geekbench Single | 1435 | 3013 | |
| Geekbench Multi | 3555 | 9287 | |
| Display | 6.8" AMOLED | 6.9" Foldable LTPO AMOLED | |
| Resolution | 3200x1440 | 1224x2912 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5000 mAh | 5165 mAh | |
| Charging | 25W | 67W | |
| Wireless charging | 15W | 0W | |
| DXOMark (camera) | 117 | — | |
| Main camera | 108 MP | 50 MP | |
| Ultrawide | 12 MP | 50 MP | |
| Telephoto | 10 MP | 0 MP | |
| Front camera | 40 MP | 32 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 128GB / 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 11 | Android 15 | |
| Brightness (peak) | 1500 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | — | |
| Dimensions | 165.1×75.6×8.9 mm | 166.9×73.8×7.6 mm | |
| Weight | 228 g | 199 g | |
| Launch price | $1199 | $830 |
Camera comparison
Samsung Galaxy S21 Ultra
- Main: 108MP f/1.8
- Ultrawide: 12MP
- Telephoto: 10MP
- Front: 40MP
Xiaomi Mix Flip 2
- Main: 50MP
- Ultrawide: 50MP
- Front: 32MP
Display comparison
Samsung Galaxy S21 Ultra
- 6.8" AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Xiaomi Mix Flip 2
- 6.9" Foldable LTPO AMOLED
- Resolution: 1224x2912
- Refresh rate: 120 Hz
Battery and charging
Samsung Galaxy S21 Ultra
- 5000 mAh
- Wired: 25W
- Wireless: 15W
Xiaomi Mix Flip 2
- 5165 mAh
- Wired: 67W
- No wireless charging
Overall performance score
We compared Samsung Galaxy S21 Ultra and Xiaomi Mix Flip 2, covering their specs and all relevant benchmarks.
Xiaomi Mix Flip 2 leads Samsung Galaxy S21 Ultra by 65.6% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $369. Xiaomi Mix Flip 2 was $369 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Xiaomi Mix Flip 2 notably outperforms the Samsung Galaxy S21 Ultra (91/100 vs 63/100).
display
In the "display" category, the Samsung Galaxy S21 Ultra and the Xiaomi Mix Flip 2 are nearly equal (89/100 vs 85/100).
camera
In the "camera" category, the Xiaomi Mix Flip 2 and the Samsung Galaxy S21 Ultra are nearly equal (57/100 vs 55/100).
battery
In the "battery" category, the Xiaomi Mix Flip 2 and the Samsung Galaxy S21 Ultra are nearly equal (56/100 vs 52/100).
portability
In the "portability" category, the Xiaomi Mix Flip 2 significantly outperforms the Samsung Galaxy S21 Ultra (64/100 vs 33/100).
Frequently asked questions
Which is better: the Samsung Galaxy S21 Ultra or the Xiaomi Mix Flip 2?
The Xiaomi Mix Flip 2 is noticeably better than the Samsung Galaxy S21 Ultra — the overall rating gap is 13 points.
What is the rating of the Samsung Galaxy S21 Ultra and the Xiaomi Mix Flip 2?
The Samsung Galaxy S21 Ultra has a MobileRank rating of 61/100, the Xiaomi Mix Flip 2 — 74/100.
Which is more powerful: the Samsung Galaxy S21 Ultra or the Xiaomi Mix Flip 2?
The Xiaomi Mix Flip 2 leads on performance (91/100 vs 63/100).
Should you choose the Samsung Galaxy S21 Ultra over the Xiaomi Mix Flip 2?
The Samsung Galaxy S21 Ultra is a better fit for active users. The Xiaomi Mix Flip 2 is a better fit for gamers and power users.