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- Galaxy S21 5G vs iQOO U3x
Samsung Galaxy S21 5G vs Vivo iQOO U3x
What Galaxy S21 5G does better (25) and where iQOO U3x wins (4) — every spec side by side.
vs
7.7Display5.5
7.9Camera4.2
3.8Battery4.6
9.4Features5.8
Dimensions
Size comparison
Galaxy S21 5GiQOO U3x
| Galaxy S21 5G | iQOO U3x | Difference | |
|---|---|---|---|
| Height | 151.7 mm | 164.2 mm | −12.5 mm |
| Width | 71.2 mm | 75.4 mm | −4.2 mm |
| Thickness | 7.9 mm | 8.4 mm | −0.5 mm |
| Weight | 169 g | 186 g | −16 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Galaxy S21 5G better than iQOO U3x?
- OLED panelYes · iQOO U3x: No
- Storage (max)256 GB vs 128 GB2×
- Optical stabilisationYes · iQOO U3x: No
- Telephoto cameraYes · iQOO U3x: No
- Wireless chargingYes · iQOO U3x: No
- NFCYes · iQOO U3x: No
- Stereo speakersYes · iQOO U3x: No
- Wired charging25 W vs 18 W+39%
- Refresh rate120 Hz vs 90 Hz+33%
- Rear cameras3 vs 13×
- CPU frequency2.9 GHz vs 2 GHz+45%
- Storage (base)128 GB vs 64 GB2×
Why is iQOO U3x better than Galaxy S21 5G?
- Battery capacity4,000 mAh vs 5,000 mAh+25%
- Main camera12 MP vs 13 MP+8%
- 3.5 mm headphone jackNo · Galaxy S21 5G: Yes
- Screen size6.2″ vs 6.6″+6%
Specifications
Side by side
| Design | ||
| Weight | 169 g | 186 g |
| Thickness | 7.9 mm | 8.4 mm |
| Height | 151.7 mm | 164.2 mm |
| Width | 71.2 mm | 75.4 mm |
| Frame | Aluminium | — |
| Back | Plastic | — |
| Ingress protection | IP68 | — |
| Water resistance (IPx) | IPx8 | — |
| Glass protection | Corning Gorilla Glass Victus | — |
| Colours | Phantom Gray, Phantom White, Phantom Violet, Phantom Pink | Gray, Aurora |
| Display | ||
| Screen size | 6.2″ | 6.6″ |
| Panel | Dynamic AMOLED 2X | IPS LCD |
| OLED panel | Yes | No |
| Resolution (width) | 1,080 px | 1,080 px |
| Resolution (height) | 2,400 px | 2,408 px |
| Pixel density | 421 ppi | 401 ppi |
| Refresh rate | 120 Hz | 90 Hz |
| Peak brightness | 1,300 nits | — |
| Measured brightness | 856 nits | — |
| Screen-to-body ratio | 87.2% | 84.2% |
| HDR | Yes | — |
| Performance | ||
| Chipset | Exynos 2100 - International | Qualcomm SM4350 Snapdragon 480 5G |
| Chip maker | Qualcomm | Qualcomm |
| Process | 5 nm | 8 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.9 GHz | 2 GHz |
| GPU | Mali-G78 MP14 - International Adreno 660 - USA/China | Adreno 619 |
| AnTuTu score | 584,055 | — |
| Geekbench 6 (multi-core) | 3,238 | — |
| 3DMark Wild Life Extreme | 1,800 | — |
| Memory | ||
| RAM | 8 GB | 8 GB |
| Storage (max) | 256 GB | 128 GB |
| Storage (base) | 128 GB | 64 GB |
| Storage type | UFS 3.1 | UFS 2.1 |
| Memory card slot | No | No |
| Camera | ||
| Main camera | 12 MP | 13 MP |
| Main camera aperture | f/1.8 | f/2.2 |
| Main sensor size | 1/1.76" | — |
| Rear cameras | 3 | 1 |
| Optical stabilisation | Yes | No |
| Ultra-wide camera | Yes | No |
| Telephoto camera | Yes | No |
| Optical zoom | 1.1× | — |
| Max video | 8K | 4K |
| 4K video frame rate | 60 fps | 30 fps |
| Selfie camera | 10 MP | 8 MP |
| 4K selfie video | Yes | No |
| Battery | ||
| Battery capacity | 4,000 mAh | 5,000 mAh |
| Battery type | Li-Ion | — |
| Wired charging | 25 W | 18 W |
| Charged in 30 min | 55% | — |
| Wireless charging | Yes | No |
| Wireless charging power | 15 W | — |
| Reverse wireless charging | Yes | — |
| Connectivity | ||
| 5G | Yes | Yes |
| eSIM | Yes | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 6 | Wi-Fi 6 |
| Bluetooth | 5 | 5.1 |
| NFC | Yes | No |
| USB | USB Type-C 3.2 | USB Type-C 2.0 |
| USB version | 3.2 | 2 |
| Satellite navigation | GLONASS, GALILEO, BDS | GLONASS, GALILEO, BDS |
| Features | ||
| Stereo speakers | Yes | No |
| 3.5 mm headphone jack | No | Yes |
| Loudspeaker loudness | -26.4 LUFS | — |
| Fingerprint sensor | Under display, ultrasonic | Side |
| Barometer | Yes | — |
| Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer | Fingerprint (side-mounted), accelerometer, proximity, compass |
| SAR (head) | 0.46 W/kg | — |
| Software | ||
| OS at launch | Android 11 | Android 11 |
| Platform | Android | Android |
| Interface | One UI 7 | OriginOS 1.0 for iQOO |
| Major OS updates promised | 4 | — |
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