Vivo iQOO 15 Ultra vs Vivo S21 Pro
The Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Vivo S21 Pro (2024) runs on the MediaTek Dimensity 9300+. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 79/100 (a 10-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 5500); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 2,348,248).
Profile comparison
Category scores
Vivo iQOO 15 Ultra
Vivo S21 Pro
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 2348248
- Better Geekbench Single: 3639 vs 2249
- Better Geekbench Multi: 11047 vs 7352
- Bigger battery: 7400 vs 5500 mAh
- Faster charging: 120W vs 90W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (99/100 vs 83/100)
- Longer battery life (92/100 vs 64/100)
- Better display (99/100 vs 85/100)
What makes Vivo S21 Pro better?
- Better camera (81/100 vs 78/100)
Comparison verdict
Comparing the Vivo iQOO 15 Ultra vs the Vivo S21 Pro, the Vivo iQOO 15 Ultra scores 10 points higher (89/100 vs 79/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 83/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 64/100). In the "performance" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo S21 Pro (99/100 vs 83/100). In the "display" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 85/100). In the "camera" category, the Vivo S21 Pro and the Vivo iQOO 15 Ultra are nearly equal (81/100 vs 78/100). In the "battery" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo S21 Pro (92/100 vs 64/100).
Specs comparison
| Specification | Vivo iQOO 15 Ultra | Vivo S21 Pro | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | MediaTek Dimensity 9300+ | |
| AnTuTu | 4602290 | 2348248 | |
| Geekbench Single | 3639 | 2249 | |
| Geekbench Multi | 11047 | 7352 | |
| Display | 6.8" LTPO AMOLED | 6.7" AMOLED | |
| Resolution | 1440x3168 | 1260x2800 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7400 mAh | 5500 mAh | |
| Charging | 120W | 90W | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 50 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 32 MP | 50 MP | |
| RAM | 12GB / 16GB / 24GB | 16GB | |
| Storage | 256GB / 512GB / 1TB | 512GB | |
| OS | Android 16 | Android 15, OriginOS 5 | |
| Brightness (peak) | 8000 nits | — | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 163.7×76.8×8.7 mm | — | |
| Weight | 227 g | — | |
| Launch price | $799 | — |
Camera comparison
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo S21 Pro
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 50MP
Display comparison
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Vivo S21 Pro
- 6.7" AMOLED
- Resolution: 1260x2800
- Refresh rate: 120 Hz
Battery and charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Vivo S21 Pro
- 5500 mAh
- Wired: 90W
- No wireless charging
Overall performance score
We compared Vivo iQOO 15 Ultra and Vivo S21 Pro, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Vivo S21 Pro by 96.0% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo S21 Pro
Price unknownDetailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo S21 Pro (99/100 vs 83/100).
display
In the "display" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 85/100).
camera
In the "camera" category, the Vivo S21 Pro and the Vivo iQOO 15 Ultra are nearly equal (81/100 vs 78/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo S21 Pro (92/100 vs 64/100).
Frequently asked questions
Which is better: the Vivo iQOO 15 Ultra or the Vivo S21 Pro?
The Vivo iQOO 15 Ultra is noticeably better than the Vivo S21 Pro — the overall rating gap is 10 points.
What is the rating of the Vivo iQOO 15 Ultra and the Vivo S21 Pro?
The Vivo iQOO 15 Ultra has a MobileRank rating of 89/100, the Vivo S21 Pro — 79/100.
Which is more powerful: the Vivo iQOO 15 Ultra or the Vivo S21 Pro?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 83/100).
Should you choose the Vivo iQOO 15 Ultra over the Vivo S21 Pro?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Vivo S21 Pro is a better fit for gamers and power users, mobile photography enthusiasts.