OnePlus 15 vs Samsung Galaxy A21s
The OnePlus 15 (2025) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Samsung Galaxy A21s (2020) runs on the Exynos 850; launch prices were $799 and $215. By overall MobileRank rating, the OnePlus 15 leads — 86/100 vs 29/100 (a 57-point difference). Key differences: the OnePlus 15 has the bigger battery (6500 mAh vs 5000); the main camera is 50 MP vs 48 MP; the OnePlus 15 is faster in AnTuTu (3,606,149 vs 234,339); the Samsung Galaxy A21s is noticeably lighter (192g vs 213g).
Profile comparison
Category scores
OnePlus 15
Samsung Galaxy A21s
What makes OnePlus 15 better?
- Higher AnTuTu: 3606149 vs 234339
- Better Geekbench Single: 3639 vs 300
- Better Geekbench Multi: 11047 vs 836
- Bigger battery: 6500 vs 5000 mAh
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 120Hz vs 60Hz
- Higher performance (97/100 vs 16/100)
- Better camera (78/100 vs 30/100)
- Longer battery life (89/100 vs 52/100)
- Better display (84/100 vs 32/100)
What makes Samsung Galaxy A21s better?
- Lighter: 192g vs 213g
- Cheaper at launch: $215 vs $799
- Better portability (55/100 vs 50/100)
Comparison verdict
Comparing the OnePlus 15 vs the Samsung Galaxy A21s, the OnePlus 15 scores 57 points higher (86/100 vs 29/100). In the "performance" category, the OnePlus 15 leads (97/100 vs 16/100). In the "camera" category, the OnePlus 15 leads (78/100 vs 30/100). In the "battery" category, the OnePlus 15 leads (89/100 vs 52/100). Value score: OnePlus 15 — 86/100, Samsung Galaxy A21s — 16/100; 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 15 significantly outperforms the Samsung Galaxy A21s (97/100 vs 16/100). In the "display" category, the OnePlus 15 significantly outperforms the Samsung Galaxy A21s (84/100 vs 32/100). In the "camera" category, the OnePlus 15 significantly outperforms the Samsung Galaxy A21s (78/100 vs 30/100). In the "battery" category, the OnePlus 15 significantly outperforms the Samsung Galaxy A21s (89/100 vs 52/100). In the "portability" category, the Samsung Galaxy A21s is a bit better (55/100 vs 50/100).
Specs comparison
| Specification | OnePlus 15 | Samsung Galaxy A21s | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Exynos 850 | |
| AnTuTu | 3606149 | 234339 | |
| Geekbench Single | 3639 | 300 | |
| Geekbench Multi | 11047 | 836 | |
| Display | 6.8" AMOLED | 6.5" IPS LCD | |
| Resolution | 1272x2772 | — | |
| Refresh rate | 120 Hz | 60 Hz | |
| Battery | 6500 mAh | 5000 mAh | |
| Charging | 120W | — | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 50 MP | 0 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 13 MP | |
| RAM | 12GB / 16GB | 3GB / 4GB / 6GB | |
| Storage | 256GB / 512GB | 32GB / 64GB | |
| OS | Android 16, OxygenOS 16 (Global), ColorOS 16 (China) | — | |
| Brightness (peak) | 1800 nits | — | |
| NFC | yes | yes | |
| Protection | IP68 | — | |
| Dimensions | 161.4×76.7×8.1 mm | 163.7×75.3×8.9 mm | |
| Weight | 213 g | 192 g | |
| Launch price | $799 | $215 |
Camera comparison
OnePlus 15
- Main: 50MP f/1.8
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Samsung Galaxy A21s
- Main: 48MP
- Front: 13MP
Display comparison
OnePlus 15
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 120 Hz
Samsung Galaxy A21s
- 6.5" IPS LCD
- Refresh rate: 60 Hz
Battery and charging
OnePlus 15
- 6500 mAh
- Wired: 120W
- Wireless: 50W
Samsung Galaxy A21s
- 5000 mAh
- No wireless charging
Overall performance score
We compared OnePlus 15 and Samsung Galaxy A21s, covering their specs and all relevant benchmarks.
OnePlus 15 leads Samsung Galaxy A21s by 1438.9% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $584. Samsung Galaxy A21s was $584 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the OnePlus 15 significantly outperforms the Samsung Galaxy A21s (97/100 vs 16/100).
display
In the "display" category, the OnePlus 15 significantly outperforms the Samsung Galaxy A21s (84/100 vs 32/100).
camera
In the "camera" category, the OnePlus 15 significantly outperforms the Samsung Galaxy A21s (78/100 vs 30/100).
battery
In the "battery" category, the OnePlus 15 significantly outperforms the Samsung Galaxy A21s (89/100 vs 52/100).
portability
In the "portability" category, the Samsung Galaxy A21s is a bit better (55/100 vs 50/100).
Frequently asked questions
Which is better: the OnePlus 15 or the Samsung Galaxy A21s?
The OnePlus 15 significantly outperforms the Samsung Galaxy A21s by 57 points (86/100 vs 29/100).
What is the rating of the OnePlus 15 and the Samsung Galaxy A21s?
The OnePlus 15 has a MobileRank rating of 86/100, the Samsung Galaxy A21s — 29/100.
Which has the better camera: the OnePlus 15 or the Samsung Galaxy A21s?
The OnePlus 15 leads on camera score (78/100 vs 30/100).
Which is more powerful: the OnePlus 15 or the Samsung Galaxy A21s?
The OnePlus 15 leads on performance (97/100 vs 16/100).
Should you choose the OnePlus 15 over the Samsung Galaxy A21s?
The OnePlus 15 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.