Vivo X21i vs Xiaomi 17 Ultra (China)
The Vivo X21i (2018) runs on the MediaTek Helio P60, while the Xiaomi 17 Ultra (China) (2025) runs on the Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Xiaomi 17 Ultra (China) leads — 87/100 vs 30/100 (a 57-point difference). Key differences: the Xiaomi 17 Ultra (China) has the bigger battery (6800 mAh vs 3425); the main camera is 12 MP vs 50 MP; the Xiaomi 17 Ultra (China) is faster in AnTuTu (3,950,082 vs 314,537); the Xiaomi 17 Ultra (China) has NFC for contactless payments, the Vivo X21i doesn't; the Vivo X21i is noticeably lighter (159g vs 224g).
Profile comparison
Category scores
Vivo X21i
Xiaomi 17 Ultra (China)
What makes Vivo X21i better?
- Lighter: 159g vs 224g
- Better display (82/100 vs 81/100)
- Better portability (94/100 vs 42/100)
What makes Xiaomi 17 Ultra (China) better?
- Higher AnTuTu: 3950082 vs 314537
- Better Geekbench Single: 3639 vs 341
- Better Geekbench Multi: 11047 vs 779
- Bigger battery: 6800 vs 3425 mAh
- Better main camera: 50MP vs 12MP
- Higher performance (98/100 vs 20/100)
- Better camera (87/100 vs 15/100)
- Longer battery life (83/100 vs 15/100)
Comparison verdict
Comparing the Vivo X21i vs the Xiaomi 17 Ultra (China), the Xiaomi 17 Ultra (China) scores 57 points higher (87/100 vs 30/100). In the "performance" category, the Xiaomi 17 Ultra (China) leads (98/100 vs 20/100). In the "camera" category, the Xiaomi 17 Ultra (China) leads (87/100 vs 15/100). In the "battery" category, the Xiaomi 17 Ultra (China) leads (83/100 vs 15/100). In the "performance" category, the Xiaomi 17 Ultra (China) significantly outperforms the Vivo X21i (98/100 vs 20/100). In the "display" category, the Vivo X21i and the Xiaomi 17 Ultra (China) are nearly equal (82/100 vs 81/100). In the "camera" category, the Xiaomi 17 Ultra (China) significantly outperforms the Vivo X21i (87/100 vs 15/100). In the "battery" category, the Xiaomi 17 Ultra (China) significantly outperforms the Vivo X21i (83/100 vs 15/100). In the "portability" category, the Vivo X21i significantly outperforms the Xiaomi 17 Ultra (China) (94/100 vs 42/100).
Specs comparison
| Specification | Vivo X21i | Xiaomi 17 Ultra (China) | |
|---|---|---|---|
| Processor | MediaTek Helio P60 | Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 314537 | 3950082 | |
| Geekbench Single | 341 | 3639 | |
| Geekbench Multi | 779 | 11047 | |
| Display | 6.3" Super AMOLED | 6.9" LTPO AMOLED | |
| Resolution | 1080x2280 | 1200x2608 | |
| Refresh rate | — | 120 Hz | |
| Battery | 3425 mAh | 6800 mAh | |
| Charging | — | 90W | |
| Wireless charging | — | 50W | |
| Main camera | 12 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 24 MP | 50 MP | |
| RAM | 4GB / 6GB | 12GB / 16GB | |
| Storage | 64GB / 128GB | 512GB / 1TB | |
| OS | Android 8.1 (Oreo); Funtouch 4 | Android 16 | |
| NFC | no | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | 154.4×75.0×7.0 mm | 162.9×77.6×8.3 mm | |
| Weight | 159 g | 224 g | |
| Launch price | — | $892 |
Camera comparison
Vivo X21i
- Main: 12MP f/1.8
- Front: 24MP
Xiaomi 17 Ultra (China)
- Main: 50MP f/1.7
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 50MP
Display comparison
Vivo X21i
- 6.3" Super AMOLED
- Resolution: 1080x2280
- Refresh rate: —
Xiaomi 17 Ultra (China)
- 6.9" LTPO AMOLED
- Resolution: 1200x2608
- Refresh rate: 120 Hz
Battery and charging
Vivo X21i
- 3425 mAh
- Wireless charging: no data
Xiaomi 17 Ultra (China)
- 6800 mAh
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared Vivo X21i and Xiaomi 17 Ultra (China), covering their specs and all relevant benchmarks.
Xiaomi 17 Ultra (China) leads Vivo X21i by 92.0% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo X21i
Price unknownDetailed category analysis
performance
In the "performance" category, the Xiaomi 17 Ultra (China) significantly outperforms the Vivo X21i (98/100 vs 20/100).
display
In the "display" category, the Vivo X21i and the Xiaomi 17 Ultra (China) are nearly equal (82/100 vs 81/100).
camera
In the "camera" category, the Xiaomi 17 Ultra (China) significantly outperforms the Vivo X21i (87/100 vs 15/100).
battery
In the "battery" category, the Xiaomi 17 Ultra (China) significantly outperforms the Vivo X21i (83/100 vs 15/100).
portability
In the "portability" category, the Vivo X21i significantly outperforms the Xiaomi 17 Ultra (China) (94/100 vs 42/100).
Frequently asked questions
Which is better: the Vivo X21i or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) significantly outperforms the Vivo X21i by 57 points (87/100 vs 30/100).
What is the rating of the Vivo X21i and the Xiaomi 17 Ultra (China)?
The Vivo X21i has a MobileRank rating of 30/100, the Xiaomi 17 Ultra (China) — 87/100.
Which has the better camera: the Vivo X21i or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) leads on camera score (87/100 vs 15/100).
Which is more powerful: the Vivo X21i or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) leads on performance (98/100 vs 20/100).
Should you choose the Vivo X21i over the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.