Samsung Galaxy M21 vs Vivo iQOO 15 Ultra
The Samsung Galaxy M21 (2020) runs on the Exynos 9611, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 42/100 (a 47-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 6000); the main camera is 48 MP vs 50 MP; the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 355,351); the Vivo iQOO 15 Ultra has NFC for contactless payments, the Samsung Galaxy M21 doesn't; the Samsung Galaxy M21 is noticeably lighter (188g vs 227g).
Profile comparison
Category scores
Samsung Galaxy M21
Vivo iQOO 15 Ultra
What makes Samsung Galaxy M21 better?
- Lighter: 188g vs 227g
- Better portability (57/100 vs 35/100)
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 355351
- Better Geekbench Single: 3639 vs 365
- Better Geekbench Multi: 11047 vs 1107
- Bigger battery: 7400 vs 6000 mAh
- Faster charging: 120W vs 15W
- Better main camera: 50MP vs 48MP
- Higher performance (99/100 vs 25/100)
- Better camera (78/100 vs 36/100)
- Longer battery life (92/100 vs 51/100)
- Better display (99/100 vs 83/100)
Comparison verdict
Comparing the Samsung Galaxy M21 vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 47 points higher (89/100 vs 42/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 25/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 36/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 51/100). In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Samsung Galaxy M21 (99/100 vs 25/100). In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Samsung Galaxy M21 (99/100 vs 83/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Samsung Galaxy M21 (78/100 vs 36/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Samsung Galaxy M21 (92/100 vs 51/100). In the "portability" category, the Samsung Galaxy M21 notably outperforms the Vivo iQOO 15 Ultra (57/100 vs 35/100).
Specs comparison
| Specification | Samsung Galaxy M21 | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Exynos 9611 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 355351 | 4602290 | |
| Geekbench Single | 365 | 3639 | |
| Geekbench Multi | 1107 | 11047 | |
| Display | 6.4" Super AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 1080x2340 | 1440x3168 | |
| Refresh rate | — | 144 Hz | |
| Battery | 6000 mAh | 7400 mAh | |
| Charging | 15W | 120W | |
| Wireless charging | 0W | 50W | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 4GB / 6GB | 12GB / 16GB / 24GB | |
| Storage | 64GB / 128GB | 256GB / 512GB / 1TB | |
| OS | Android 10.0; One UI 2 | Android 16 | |
| Brightness (peak) | 420 nits | 8000 nits | |
| NFC | no | yes | |
| Protection | — | IP68 | |
| Dimensions | 159.0×75.1×8.9 mm | 163.7×76.8×8.7 mm | |
| Weight | 188 g | 227 g | |
| Launch price | — | $799 |
Camera comparison
Samsung Galaxy M21
- Main: 48MP f/2.0
- Ultrawide: 8MP
- Front: 20MP
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Samsung Galaxy M21
- 6.4" Super AMOLED
- Resolution: 1080x2340
- Refresh rate: —
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Samsung Galaxy M21
- 6000 mAh
- Wired: 15W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Overall performance score
We compared Samsung Galaxy M21 and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Samsung Galaxy M21 by 92.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Samsung Galaxy M21
Price unknownDetailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Samsung Galaxy M21 (99/100 vs 25/100).
display
In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Samsung Galaxy M21 (99/100 vs 83/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Samsung Galaxy M21 (78/100 vs 36/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Samsung Galaxy M21 (92/100 vs 51/100).
portability
In the "portability" category, the Samsung Galaxy M21 notably outperforms the Vivo iQOO 15 Ultra (57/100 vs 35/100).
Frequently asked questions
Which is better: the Samsung Galaxy M21 or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Samsung Galaxy M21 by 47 points (89/100 vs 42/100).
What is the rating of the Samsung Galaxy M21 and the Vivo iQOO 15 Ultra?
The Samsung Galaxy M21 has a MobileRank rating of 42/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Samsung Galaxy M21 or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 36/100).
Which is more powerful: the Samsung Galaxy M21 or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 25/100).
Should you choose the Samsung Galaxy M21 over the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.