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- Zenfone 8 vs Galaxy S21 Ultra 5G
Asus Zenfone 8 vs Samsung Galaxy S21 Ultra 5G
What Zenfone 8 does better (7) and where Galaxy S21 Ultra 5G wins (17) — every spec side by side.
vs
7.5Display9.1
6.8Performance6.7
9.2Camera9.8
3.0Battery6.2
9.1Features9.4
Dimensions
Size comparison
Zenfone 8Galaxy S21 Ultra 5G
| Zenfone 8 | Galaxy S21 Ultra 5G | Difference | |
|---|---|---|---|
| Height | 148 mm | 165.1 mm | −17.1 mm |
| Width | 68.5 mm | 75.6 mm | −7.1 mm |
| Thickness | 8.9 mm | 8.9 mm | = |
| Weight | 169 g | 227 g | −58 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Zenfone 8 better than Galaxy S21 Ultra 5G?
- AnTuTu score676,001 vs 657,150+3%
- Wired charging30 W vs 25 W+20%
- Weight169 g vs 227 g+34%
- Geekbench 6 (multi-core)3,604 vs 3,518+2%
- 4K video frame rate120 fps vs 60 fps2×
- 3.5 mm headphone jackYes · Galaxy S21 Ultra 5G: No
- Charged in 30 min72% vs 54%+33%
Why is Galaxy S21 Ultra 5G better than Zenfone 8?
- Main camera64 MP vs 108 MP+69%
- Battery capacity4,000 mAh vs 5,000 mAh+25%
- Storage (max)256 GB vs 512 GB2×
- Telephoto cameraNo · Zenfone 8: Yes
- Wireless chargingNo · Zenfone 8: Yes
- Selfie camera12 MP vs 40 MP3.3×
- Peak brightness1,100 nits vs 1,500 nits+36%
- Measured brightness800 nits vs 1,023 nits+28%
- Rear cameras2 vs 42×
- eSIMNo · Zenfone 8: Yes
- Pixel density446 ppi vs 515 ppi+15%
- Screen size5.9″ vs 6.8″+15%
Specifications
Side by side
| Design | ||
| Weight | 169 g | 227 g |
| Thickness | 8.9 mm | 8.9 mm |
| Height | 148 mm | 165.1 mm |
| Width | 68.5 mm | 75.6 mm |
| Frame | Aluminium | Aluminium |
| Back | Glass | Glass |
| Ingress protection | IP68 | IP68 |
| Water resistance (IPx) | IPx8 | IPx8 |
| Glass protection | Corning Gorilla Glass Victus | Corning Gorilla Glass Victus |
| Colours | Obsidian Black, Horizon Silver | Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy |
| Stylus | — | Yes |
| Display | ||
| Screen size | 5.9″ | 6.8″ |
| Panel | Super AMOLED | Dynamic AMOLED 2X |
| OLED panel | Yes | Yes |
| Resolution (width) | 1,080 px | 1,440 px |
| Resolution (height) | 2,400 px | 3,200 px |
| Pixel density | 446 ppi | 515 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,100 nits | 1,500 nits |
| Measured brightness | 800 nits | 1,023 nits |
| Screen-to-body ratio | 82.9% | 89.8% |
| HDR | Yes | Yes |
| Performance | ||
| Chipset | Qualcomm SM8350 Snapdragon 888 5G | Exynos 2100 - International |
| Chip maker | Qualcomm | Qualcomm |
| Process | 5 nm | 5 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.84 GHz | 2.9 GHz |
| GPU | Adreno 660 | Mali-G78 MP14 - International Adreno 660 - USA/China |
| AnTuTu score | 676,001 | 657,150 |
| Geekbench 6 (multi-core) | 3,604 | 3,518 |
| Memory | ||
| RAM | 16 GB | 16 GB |
| Storage (max) | 256 GB | 512 GB |
| Storage (base) | 128 GB | 128 GB |
| Storage type | UFS 3.1 | UFS 3.1 |
| Memory card slot | No | No |
| Camera | ||
| Main camera | 64 MP | 108 MP |
| Main camera aperture | f/1.8 | f/1.8 |
| Main sensor size | 1/1.73" | 1/1.33" |
| Rear cameras | 2 | 4 |
| Optical stabilisation | Yes | Yes |
| Ultra-wide camera | Yes | Yes |
| Telephoto camera | No | Yes |
| Optical zoom | — | 10× |
| Max video | 8K | 8K |
| 4K video frame rate | 120 fps | 60 fps |
| Selfie camera | 12 MP | 40 MP |
| 4K selfie video | Yes | Yes |
| Battery | ||
| Battery capacity | 4,000 mAh | 5,000 mAh |
| Battery type | Li-Po | Li-Ion |
| Wired charging | 30 W | 25 W |
| Charged in 30 min | 72% | 54% |
| Wireless charging | No | Yes |
| Wireless charging power | — | 15 W |
| Reverse wireless charging | — | Yes |
| Connectivity | ||
| 5G | Yes | Yes |
| eSIM | No | Yes |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 6E | Wi-Fi 6E |
| Bluetooth | 5.2 | 5.2 |
| NFC | Yes | Yes |
| USB | USB Type-C 2.0 | USB Type-C 3.2 |
| USB version | 2 | 3.2 |
| Ultra Wideband | — | Yes |
| Dual-band GPS | Yes | — |
| Satellite navigation | GLONASS, GALILEO, BDS, QZSS, NavIC | GLONASS, GALILEO, BDS |
| Features | ||
| Stereo speakers | Yes | Yes |
| 3.5 mm headphone jack | Yes | No |
| Loudspeaker loudness | -27.9 LUFS | -25.5 LUFS |
| Fingerprint sensor | Under display | Under display, ultrasonic |
| Barometer | — | Yes |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer |
| SAR (head) | — | 0.71 W/kg |
| Software | ||
| OS at launch | Android 11 | Android 11 |
| Platform | Android | Android |
| Interface | Zen UI 8 | One UI 7 |
| Major OS updates promised | — | 4 |
