iPhone X vs Samsung Galaxy S21 Ultra
20Performance37.2
29.7Display56.3
35.3Camera72
21.3Battery46.4
60Features78.7
4 spec wins — iPhone X15 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
Samsung Galaxy S21 Ultra wins this phone face-off, 53.9 to 29.3, pulling ahead mainly in camera (+37) and display (+27). iPhone X still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the iPhone X
- 25% higher OS update pledge: 5 years vs 4 years
- 24% lower weight: 174 g vs 228 g
- 20% higher telephoto: 12 MP vs 10 MP
- 13% lower thickness: 7.7 mm vs 8.9 mm
- Lower launch price: $999 vs $1,199
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger performance score: 37 vs 20
- Stronger display score: 56 vs 30
- Stronger camera score: 72 vs 35
- Stronger battery score: 46 vs 21
- Stronger features score: 79 vs 60
Display
| Spec | iPhone X | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 5.8 ″ | 6.8 ″+17% |
| Panel type | OLED | LTPO AMOLED |
| Resolution | 2436x1125 | 3200x1440 |
| Pixel density | 458 ppi | 515 ppi+12% |
| Refresh rate | 60 Hz | 120 Hz+100% |
| Peak brightness | 625 nits | 1,500 nits+140% |
| AnTuTu 10 (CPU) | — | 263,424Top 88% |
| AnTuTu 10 (GPU) | — | 126,989Top 82% |
| AnTuTu 10 (Memory) | — | 165,563Top 72% |
| AnTuTu 10 (UX) | — | 227,841Top 82% |
Performance
| Spec | iPhone X | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | Apple A11 Bionic | Samsung Exynos 2100 |
| AnTuTu 10 | — | 783,817Top 65% |
| Geekbench 6 (single) | 1,050Top 66% | 1,430+36%Top 52% |
| Geekbench 6 (multi) | 2,400Top 75% | 3,550+48%Top 56% |
| RAM (max) | 3 GB | 12 GB+300% |
| Storage options | 64GB / 256GB | 128GB / 256GB / 512GB |
| Storage type | NVMe | UFS 3.1 |
Camera
| Spec | iPhone X | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 12 MP | 108 MP+800% |
| Main aperture | f/1.8 | f/1.8 |
| Ultra-wide | — | 12 MP |
| Telephoto | 12 MP+20% | 10 MP |
| Optical zoom | 2 x | 10 x+400% |
| Max video | 4K@60fps | 8K@24fps |
| Front camera | 7 MP | 40 MP+471% |
| OIS | Yes | Yes |
Battery
| Spec | iPhone X | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 2,716 mAh | 5,000 mAh+84% |
| Wired charging | 15 W | 25 W+67% |
| Wireless charging | 8 W | 15 W+100% |
Design
| Spec | iPhone X | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 174 g+24% | 228 g |
| Thickness | 7.7 mm+13% | 8.9 mm |
| IP rating | IP67 | IP68 |
| Frame material | Stainless steel | Aluminum |
Connectivity
| Spec | iPhone X | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | No | Yes |
| Wi-Fi | Wi-Fi 5 | Wi-Fi 6E |
| Bluetooth | 5.0 | 5.2 |
| NFC | Yes | Yes |
| USB | Lightning | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | iPhone X | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | iOS 11 | Android 11 (One UI 3.1) |
| OS update pledge | 5 years+25% | 4 years |
Audio
| Spec | iPhone X | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |