Samsung Galaxy A51 vs Vivo iQOO 15
The Samsung Galaxy A51 (2020) runs on the Exynos 9611, while the Vivo iQOO 15 (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $399 and $599. By overall MobileRank rating, the Vivo iQOO 15 leads — 86/100 vs 34/100 (a 52-point difference). Key differences: the Vivo iQOO 15 has the bigger battery (7000 mAh vs 4000); the main camera is 48 MP vs 50 MP; the Vivo iQOO 15 is faster in AnTuTu (3,758,268 vs 355,351); the Samsung Galaxy A51 is noticeably lighter (172g vs 215g).
Profile comparison
Category scores
Samsung Galaxy A51
Vivo iQOO 15
What makes Samsung Galaxy A51 better?
- Lighter: 172g vs 215g
- Cheaper at launch: $399 vs $599
- Better portability (77/100 vs 48/100)
What makes Vivo iQOO 15 better?
- Higher AnTuTu: 3758268 vs 355351
- Better Geekbench Single: 3013 vs 365
- Better Geekbench Multi: 9287 vs 1107
- Bigger battery: 7000 vs 4000 mAh
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 144Hz vs 60Hz
- Higher performance (94/100 vs 25/100)
- Better camera (78/100 vs 36/100)
- Longer battery life (85/100 vs 25/100)
- Better display (99/100 vs 51/100)
Comparison verdict
Comparing the Samsung Galaxy A51 vs the Vivo iQOO 15, the Vivo iQOO 15 scores 52 points higher (86/100 vs 34/100). In the "performance" category, the Vivo iQOO 15 leads (94/100 vs 25/100). In the "camera" category, the Vivo iQOO 15 leads (78/100 vs 36/100). In the "battery" category, the Vivo iQOO 15 leads (85/100 vs 25/100). Value score: Samsung Galaxy A51 — 0/100, Vivo iQOO 15 — 86/100; 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 Vivo iQOO 15 significantly outperforms the Samsung Galaxy A51 (94/100 vs 25/100). In the "display" category, the Vivo iQOO 15 significantly outperforms the Samsung Galaxy A51 (99/100 vs 51/100). In the "camera" category, the Vivo iQOO 15 significantly outperforms the Samsung Galaxy A51 (78/100 vs 36/100). In the "battery" category, the Vivo iQOO 15 significantly outperforms the Samsung Galaxy A51 (85/100 vs 25/100). In the "portability" category, the Samsung Galaxy A51 notably outperforms the Vivo iQOO 15 (77/100 vs 48/100).
Specs comparison
| Specification | Samsung Galaxy A51 | Vivo iQOO 15 | |
|---|---|---|---|
| Processor | Exynos 9611 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 355351 | 3758268 | |
| Geekbench Single | 365 | 3013 | |
| Geekbench Multi | 1107 | 9287 | |
| Display | 6.5" AMOLED | 6.8" LTPO AMOLED | |
| Resolution | — | 1440x3168 | |
| Refresh rate | 60 Hz | 144 Hz | |
| Battery | 4000 mAh | 7000 mAh | |
| Charging | — | 100W | |
| Wireless charging | 0W | 40W | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 32 MP | 32 MP | |
| RAM | 4GB / 6GB | 12GB / 16GB | |
| Storage | 64GB / 128GB | 256GB / 512GB / 1TB | |
| OS | — | Android 16 | |
| Brightness (peak) | — | 6000 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 158.5×73.6×7.9 mm | 163.7×76.8×8.1 mm | |
| Weight | 172 g | 215 g | |
| Launch price | $399 | $599 |
Camera comparison
Samsung Galaxy A51
- Main: 48MP
- Front: 32MP
Vivo iQOO 15
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Samsung Galaxy A51
- 6.5" AMOLED
- Refresh rate: 60 Hz
Vivo iQOO 15
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Samsung Galaxy A51
- 4000 mAh
- No wireless charging
Vivo iQOO 15
- 7000 mAh
- NanoReview test: web browsing 18:52 hrs, total 39:26 hrs
- Wired: 100W
- Wireless: 40W
Overall performance score
We compared Samsung Galaxy A51 and Vivo iQOO 15, covering their specs and all relevant benchmarks.
Vivo iQOO 15 leads Samsung Galaxy A51 by 90.5% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $200. Samsung Galaxy A51 was $200 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 significantly outperforms the Samsung Galaxy A51 (94/100 vs 25/100).
display
In the "display" category, the Vivo iQOO 15 significantly outperforms the Samsung Galaxy A51 (99/100 vs 51/100).
camera
In the "camera" category, the Vivo iQOO 15 significantly outperforms the Samsung Galaxy A51 (78/100 vs 36/100).
battery
In the "battery" category, the Vivo iQOO 15 significantly outperforms the Samsung Galaxy A51 (85/100 vs 25/100).
portability
In the "portability" category, the Samsung Galaxy A51 notably outperforms the Vivo iQOO 15 (77/100 vs 48/100).
Frequently asked questions
Which is better: the Samsung Galaxy A51 or the Vivo iQOO 15?
The Vivo iQOO 15 significantly outperforms the Samsung Galaxy A51 by 52 points (86/100 vs 34/100).
What is the rating of the Samsung Galaxy A51 and the Vivo iQOO 15?
The Samsung Galaxy A51 has a MobileRank rating of 34/100, the Vivo iQOO 15 — 86/100.
Which has the better camera: the Samsung Galaxy A51 or the Vivo iQOO 15?
The Vivo iQOO 15 leads on camera score (78/100 vs 36/100).
Which is more powerful: the Samsung Galaxy A51 or the Vivo iQOO 15?
The Vivo iQOO 15 leads on performance (94/100 vs 25/100).
Should you choose the Samsung Galaxy A51 over the Vivo iQOO 15?
The Vivo iQOO 15 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.