OPPO A6x vs Samsung Galaxy S21 Ultra
20Performance37.2
46.5Display56.3
20.5Camera72
70.9Battery46.4
20Features78.7
4 spec wins — OPPO A6x11 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
Samsung Galaxy S21 Ultra wins this phone face-off, 53.9 to 35.6, pulling ahead mainly in features (+59) and camera (+52). OPPO A6x still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the OPPO A6x
- Stronger battery score: 71 vs 46
- 30% higher capacity: 6,500 mAh vs 5,000 mAh
- Has 3.5mm jack — the other doesn't
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger performance score: 37 vs 20
- Stronger display score: 56 vs 47
- Stronger camera score: 72 vs 21
- Stronger features score: 79 vs 20
- 731% higher Main camera: 108 MP vs 13 MP
Display
| Spec | OPPO A6x | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.75 ″ | 6.8 ″+1% |
| Panel type | IPS LCD | LTPO AMOLED |
| Resolution | 1570x720 | 3200x1440 |
| Pixel density | 256 ppi | 515 ppi+101% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,125 nits | 1,500 nits+33% |
| Screen-to-body | 90.6 % | — |
Performance
| Spec | OPPO A6x | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | Snapdragon 685 | 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) | 6 GB | 12 GB+100% |
| Storage options | 64GB / 128GB / 256GB | 128GB / 256GB / 512GB |
| Storage type | UFS 2.2 | UFS 3.1 |
Camera
| Spec | OPPO A6x | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 13 MP | 108 MP+731% |
| Main aperture | f/2.2 | f/1.8 |
| Ultra-wide | — | 12 MP |
| Telephoto | — | 10 MP |
| Optical zoom | — | 10 x |
| Max video | 1080p@30fps | 8K@24fps |
| Front camera | 5 MP | 40 MP+700% |
| OIS | No | Yes |
Battery
| Spec | OPPO A6x | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 6,500 mAh+30% | 5,000 mAh |
| Wired charging | — | 25 W |
| Wireless charging | — | 15 W |
Design
| Spec | OPPO A6x | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 210 g+8% | 228 g |
| Thickness | 8.6 mm+3% | 8.9 mm |
| IP rating | IP64 | IP68 |
| Frame material | — | Aluminum |
Connectivity
| Spec | OPPO A6x | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | No | Yes |
| Wi-Fi | Wi-Fi 5 | Wi-Fi 6E |
| Bluetooth | 5.0 | 5.2 |
| NFC | No | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | OPPO A6x | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 15 (ColorOS 15) | Android 11 (One UI 3.1) |
| OS update pledge | — | 4 years |
Audio
| Spec | OPPO A6x | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | No | Yes |
| 3.5mm jack | Yes | No |
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