realme P4 5G vs Samsung Galaxy S21 Ultra
28.9Performance37.2
79.3Display56.3
30.7Camera72
79.8Battery46.4
57.3Features78.7
6 spec wins — realme P4 5G9 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
Samsung Galaxy S21 Ultra wins this phone face-off, 53.9 to 52.4, pulling ahead mainly in camera (+41) and features (+21). realme P4 5G still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the realme P4 5G
- Stronger display score: 79 vs 56
- Stronger battery score: 80 vs 46
- 220% higher Wired charging: 80 W vs 25 W
- 200% higher Peak brightness: 4,500 nits vs 1,500 nits
- 40% higher capacity: 7,000 mAh vs 5,000 mAh
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger performance score: 37 vs 29
- Stronger camera score: 72 vs 31
- Stronger features score: 79 vs 57
- 150% higher Front camera: 40 MP vs 16 MP
- 116% higher Main camera: 108 MP vs 50 MP
Display
| Spec | realme P4 5G | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.77 ″ | 6.8 ″ |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 1080x2392 | 3200x1440 |
| Pixel density | 388 ppi | 515 ppi+33% |
| Refresh rate | 144 Hz+20% | 120 Hz |
| Peak brightness | 4,500 nits+200% | 1,500 nits |
| Screen-to-body | 94 % | — |
Performance
| Spec | realme P4 5G | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | MediaTek Dimensity 7400 Ultra | Samsung Exynos 2100 |
| AnTuTu | — | 783,817Bottom 19% |
| AnTuTu 11 (CPU) | — | 263,424Bottom 14% |
| AnTuTu 11 (GPU) | — | 126,989Bottom 29% |
| AnTuTu 11 (Memory) | — | 165,563Bottom 31% |
| AnTuTu 11 (UX) | — | 227,841Bottom 17% |
| Geekbench 6 (single) | — | 1,430Top 48% |
| Geekbench 6 (multi) | — | 3,550Bottom 48% |
| RAM (max) | 8 GB | 12 GB+50% |
| Storage options | 128/256GB | 128GB / 256GB / 512GB |
| Storage type | UFS 3.1 | UFS 3.1 |
Camera
| Spec | realme P4 5G | 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 | — | 10 MP |
| Optical zoom | — | 10 x |
| Max video | 4K@30fps | 8K@24fps |
| Front camera | 16 MP | 40 MP+150% |
| OIS | No | Yes |
Battery
| Spec | realme P4 5G | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 7,000 mAh+40% | 5,000 mAh |
| Wired charging | 80 W+220% | 25 W |
| Wireless charging | 0 W | 15 W |
Design
| Spec | realme P4 5G | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 185 g+19% | 228 g |
| Thickness | 7.6 mm+15% | 8.9 mm |
| IP rating | IP65/IP66 | IP68 |
| Frame material | — | Aluminum |
Connectivity
| Spec | realme P4 5G | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 6E |
| Bluetooth | 5.4 | 5.2 |
| NFC | — | Yes |
| USB | USB Type-C | USB-C 3.2 |
| eSIM | — | Yes |
Software
| Spec | realme P4 5G | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 15 (realme UI 6.0) | Android 11 (One UI 3.1) |
| OS update pledge | 3 years | 4 years+33% |
Audio
| Spec | realme P4 5G | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |
Related comparisons
realme P4 5Gvs Nothing Phone (3a)VSrealme P4 5Gvs OUKITEL P2 PlusVSrealme P4 5Gvs Google Pixel 9 Pro FoldVSrealme P4 5Gvs OPPO Reno12 5GVSSamsung Galaxy S21 Ultravs realme P4 Power 5GVSSamsung Galaxy S21 Ultravs Motorola Edge 50 ProVSSamsung Galaxy S21 Ultravs iPhone 16eVSSamsung Galaxy S21 Ultravs OPPO Reno13VS