OPPO Reno15 (Global) vs Samsung Galaxy S21 Ultra
46.7Performance37.2
57.6Display56.3
61.4Camera72
75.1Battery46.4
73.3Features78.7
6 spec wins — OPPO Reno15 (Global)6 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
OPPO Reno15 (Global) wins this phone face-off, 60.2 to 53.9, pulling ahead mainly in battery (+29) and performance (+10). Samsung Galaxy S21 Ultra still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the OPPO Reno15 (Global)
- Stronger performance score: 47 vs 37
- Stronger battery score: 75 vs 46
- 400% higher telephoto: 50 MP vs 10 MP
- 220% higher Wired charging: 80 W vs 25 W
- 30% higher capacity: 6,500 mAh vs 5,000 mAh
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger camera score: 72 vs 61
- Stronger features score: 79 vs 73
- 186% higher Optical zoom: 10 x vs 3.5 x
- 116% higher Main camera: 108 MP vs 50 MP
- 50% higher ultra-wide: 12 MP vs 8 MP
Display
| Spec | OPPO Reno15 (Global) | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.59 ″ | 6.8 ″+3% |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 2760x1256 | 3200x1440 |
| Pixel density | 460 ppi | 515 ppi+12% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,200 nits | 1,500 nits+25% |
| Screen-to-body | 93.4 % | — |
Performance
| Spec | OPPO Reno15 (Global) | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | Qualcomm Snapdragon 7 Gen 4 | Samsung Exynos 2100 |
| AnTuTu | — | 783,817Bottom 22% |
| AnTuTu 11 (CPU) | — | 263,424Bottom 17% |
| AnTuTu 11 (GPU) | — | 126,989Bottom 33% |
| AnTuTu 11 (Memory) | — | 165,563Bottom 35% |
| AnTuTu 11 (UX) | — | 227,841Bottom 20% |
| Geekbench 6 (single) | — | 1,430Top 46% |
| Geekbench 6 (multi) | — | 3,550Bottom 50% |
| RAM (max) | 12 GB | 12 GB |
| Storage options | 256GB, 512GB | 128GB / 256GB / 512GB |
| Storage type | UFS 3.1 | UFS 3.1 |
Camera
| Spec | OPPO Reno15 (Global) | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 50 MP | 108 MP+116% |
| Main aperture | f/1.8 | f/1.8 |
| Ultra-wide | 8 MP | 12 MP+50% |
| Telephoto | 50 MP+400% | 10 MP |
| Optical zoom | 3.5 x | 10 x+186% |
| Max video | 4K@60fps | 8K@24fps |
| Front camera | 50 MP+25% | 40 MP |
| OIS | Yes | Yes |
Battery
| Spec | OPPO Reno15 (Global) | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 6,500 mAh+30% | 5,000 mAh |
| Wired charging | 80 W+220% | 25 W |
| Wireless charging | — | 15 W |
Design
| Spec | OPPO Reno15 (Global) | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 197 g+14% | 228 g |
| Thickness | 7.8 mm+13% | 8.9 mm |
| IP rating | IP66/IP68/IP69 | IP68 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | OPPO Reno15 (Global) | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 6E |
| Bluetooth | 5.4 | 5.2 |
| NFC | Yes | Yes |
| USB | USB Type-C | USB-C 3.2 |
| eSIM | Yes | Yes |
Software
| Spec | OPPO Reno15 (Global) | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 16 | Android 11 (One UI 3.1) |
| OS update pledge | — | 4 years |
Audio
| Spec | OPPO Reno15 (Global) | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | — | Yes |
| 3.5mm jack | No | No |
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