OnePlus 15s vs Samsung Galaxy A51
The OnePlus 15s (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Samsung Galaxy A51 (2020) runs on the Exynos 9611; launch prices were $700 and $399. By overall MobileRank rating, the OnePlus 15s leads — 83/100 vs 34/100 (a 49-point difference). Key differences: the OnePlus 15s has the bigger battery (7500 mAh vs 4000); the main camera is 50 MP vs 48 MP; the OnePlus 15s is faster in AnTuTu (3,950,082 vs 355,351); the Samsung Galaxy A51 is noticeably lighter (172g vs 195g).
Profile comparison
Category scores
OnePlus 15s
Samsung Galaxy A51
What makes OnePlus 15s better?
- Higher AnTuTu: 3950082 vs 355351
- Better Geekbench Single: 3639 vs 365
- Better Geekbench Multi: 11047 vs 1107
- Bigger battery: 7500 vs 4000 mAh
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 165Hz vs 60Hz
- Higher performance (98/100 vs 25/100)
- Better camera (53/100 vs 36/100)
- Longer battery life (89/100 vs 25/100)
- Better display (95/100 vs 51/100)
What makes Samsung Galaxy A51 better?
- Lighter: 172g vs 195g
- Cheaper at launch: $399 vs $700
- Better portability (77/100 vs 64/100)
Comparison verdict
Comparing the OnePlus 15s vs the Samsung Galaxy A51, the OnePlus 15s scores 49 points higher (83/100 vs 34/100). In the "performance" category, the OnePlus 15s leads (98/100 vs 25/100). In the "camera" category, the OnePlus 15s leads (53/100 vs 36/100). In the "battery" category, the OnePlus 15s leads (89/100 vs 25/100). Value score: OnePlus 15s — 80/100, Samsung Galaxy A51 — 0/100; 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 OnePlus 15s significantly outperforms the Samsung Galaxy A51 (98/100 vs 25/100). In the "display" category, the OnePlus 15s significantly outperforms the Samsung Galaxy A51 (95/100 vs 51/100). In the "camera" category, the OnePlus 15s notably outperforms the Samsung Galaxy A51 (53/100 vs 36/100). In the "battery" category, the OnePlus 15s significantly outperforms the Samsung Galaxy A51 (89/100 vs 25/100). In the "portability" category, the Samsung Galaxy A51 is a bit better (77/100 vs 64/100).
Specs comparison
| Specification | OnePlus 15s | Samsung Galaxy A51 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Exynos 9611 | |
| AnTuTu | 3950082 | 355351 | |
| Geekbench Single | 3639 | 365 | |
| Geekbench Multi | 11047 | 1107 | |
| Display | 6.3" AMOLED | 6.5" AMOLED | |
| Resolution | 2640x1216 | — | |
| Refresh rate | 165 Hz | 60 Hz | |
| Battery | 7500 mAh | 4000 mAh | |
| Charging | 100W | — | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 48 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 12GB | 4GB / 6GB | |
| Storage | 256GB / 512GB | 64GB / 128GB | |
| OS | Android 16 | — | |
| NFC | — | yes | |
| Dimensions | — | 158.5×73.6×7.9 mm | |
| Weight | 195 g | 172 g | |
| Launch price | $700 | $399 |
Camera comparison
OnePlus 15s
- Main: 50MP f/1.8
- Telephoto: 50MP
- Front: 16MP
Samsung Galaxy A51
- Main: 48MP
- Front: 32MP
Display comparison
OnePlus 15s
- 6.3" AMOLED
- Resolution: 2640x1216
- Refresh rate: 165 Hz
Samsung Galaxy A51
- 6.5" AMOLED
- Refresh rate: 60 Hz
Battery and charging
OnePlus 15s
- 7500 mAh
- Wired: 100W
- Wireless: 50W
Samsung Galaxy A51
- 4000 mAh
- No wireless charging
Overall performance score
We compared OnePlus 15s and Samsung Galaxy A51, covering their specs and all relevant benchmarks.
OnePlus 15s leads Samsung Galaxy A51 by 1011.6% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $301. Samsung Galaxy A51 was $301 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the OnePlus 15s significantly outperforms the Samsung Galaxy A51 (98/100 vs 25/100).
display
In the "display" category, the OnePlus 15s significantly outperforms the Samsung Galaxy A51 (95/100 vs 51/100).
camera
In the "camera" category, the OnePlus 15s notably outperforms the Samsung Galaxy A51 (53/100 vs 36/100).
battery
In the "battery" category, the OnePlus 15s significantly outperforms the Samsung Galaxy A51 (89/100 vs 25/100).
portability
In the "portability" category, the Samsung Galaxy A51 is a bit better (77/100 vs 64/100).
Frequently asked questions
Which is better: the OnePlus 15s or the Samsung Galaxy A51?
The OnePlus 15s significantly outperforms the Samsung Galaxy A51 by 49 points (83/100 vs 34/100).
What is the rating of the OnePlus 15s and the Samsung Galaxy A51?
The OnePlus 15s has a MobileRank rating of 83/100, the Samsung Galaxy A51 — 34/100.
Which has the better camera: the OnePlus 15s or the Samsung Galaxy A51?
The OnePlus 15s leads on camera score (53/100 vs 36/100).
Which is more powerful: the OnePlus 15s or the Samsung Galaxy A51?
The OnePlus 15s leads on performance (98/100 vs 25/100).
Should you choose the OnePlus 15s over the Samsung Galaxy A51?
The OnePlus 15s is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.