OPPO Reno15 vs Samsung Galaxy S21 Ultra
70.7Performance37.2
61Display56.3
79.1Camera72
72.3Battery46.4
100Features78.7
9 spec wins — OPPO Reno153 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
OPPO Reno15 wins this phone face-off, 73.7 to 53.9, pulling ahead mainly in performance (+34) and battery (+26). 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
- Stronger performance score: 71 vs 37
- Stronger display score: 61 vs 56
- Stronger camera score: 79 vs 72
- Stronger battery score: 72 vs 46
- Stronger features score: 100 vs 79
Reasons to pick the Samsung Galaxy S21 Ultra
- 186% higher Optical zoom: 10 x vs 3.5 x
- 12% higher Pixel density: 515 ppi vs 460 ppi
Display
| Spec | OPPO Reno15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.32 ″ | 6.8 ″+8% |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 2640x1216 | 3200x1440 |
| Pixel density | 460 ppi | 515 ppi+12% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,800 nits+20% | 1,500 nits |
| Screen-to-body | 93.4 % | — |
Performance
| Spec | OPPO Reno15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | MediaTek Dimensity 8450 | Samsung Exynos 2100 |
| AnTuTuDifferent AnTuTu versions — not compared | 2,077,098 | 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 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 200 MP+85% | 108 MP |
| Main aperture | f/1.8 | f/1.8 |
| Ultra-wide | 50 MP+317% | 12 MP |
| 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 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 6,200 mAh+24% | 5,000 mAh |
| Wired charging | 80 W+220% | 25 W |
| Wireless charging | — | 15 W |
Design
| Spec | OPPO Reno15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 187 g+18% | 228 g |
| Thickness | 8 mm+10% | 8.9 mm |
| IP rating | IP66/IP68/IP69 | IP68 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | OPPO Reno15 | 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-C | USB-C 3.2 |
| eSIM | Yes | Yes |
Software
| Spec | OPPO Reno15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 16 (ColorOS 16) | Android 11 (One UI 3.1) |
| OS update pledge | — | 4 years |
Audio
| Spec | OPPO Reno15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |
Related comparisons
OPPO Reno15vs HONOR Magic V5VSOPPO Reno15vs iQOO 15TVSOPPO Reno15vs nubia Z70 UltraVSOPPO Reno15vs RedMagic 10S ProVSSamsung Galaxy S21 Ultravs realme P4 Power 5GVSSamsung Galaxy S21 Ultravs TECNO POVA Curve 2 5GVSSamsung Galaxy S21 Ultravs Motorola Edge 50 ProVSSamsung Galaxy S21 Ultravs iPhone 16eVS