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- Z4 vs Y21s
Lava Z4 vs Vivo Y21s
What Z4 does better (4) and where Y21s wins (9) — every spec side by side.
Dimensions
Size comparison
Z4Y21s
| Z4 | Y21s | Difference | |
|---|---|---|---|
| Height | 164.5 mm | 164.3 mm | +0.2 mm |
| Width | 75.8 mm | 76.1 mm | −0.3 mm |
| Thickness | 9 mm | 8 mm | +1 mm |
| Weight | 190 g | 182 g | +8 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Z4 better than Y21s?
- Rear cameras2 vs 12×
- Ultra-wide cameraYes · Y21s: No
- Selfie camera16 MP vs 8 MP2×
- CPU frequency2.3 GHz vs 2 GHz+15%
Why is Y21s better than Z4?
- Main camera13 MP vs 50 MP3.8×
- RAM4 GB vs 6 GB+50%
- Storage (max)64 GB vs 128 GB2×
- NFCNo · Z4: Yes
- Storage (base)64 GB vs 128 GB2×
- Weight190 g vs 182 g+4%
- Wi-Fi standardWi-Fi 4 vs Wi-Fi 5+25%
- Thickness9 mm vs 8 mm+12%
- Main camera aperturef/1.9 vs f/1.8+6%
Specifications
Side by side
| Design | ||
| Weight | 190 g | 182 g |
| Thickness | 9 mm | 8 mm |
| Height | 164.5 mm | 164.3 mm |
| Width | 75.8 mm | 76.1 mm |
| Frame | Plastic | — |
| Back | Plastic | — |
| Glass protection | Corning Gorilla Glass 3 | — |
| Colours | Blue, Red | Midnight Blue, Pearl White |
| Display | ||
| Screen size | 6.5″ | 6.5″ |
| Panel | IPS LCD | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 720 px | 720 px |
| Resolution (height) | 1,600 px | 1,600 px |
| Pixel density | 270 ppi | 270 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Screen-to-body ratio | 82.1% | 81.8% |
| Performance | ||
| Chipset | Mediatek MT6765G Helio G35 | Mediatek MT6769V/CU Helio G80 |
| Chip maker | MediaTek | MediaTek |
| Process | 12 nm | 12 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.3 GHz | 2 GHz |
| GPU | PowerVR GE8320 | Mali-G52 MC2 |
| Memory | ||
| RAM | 4 GB | 6 GB |
| Storage (max) | 64 GB | 128 GB |
| Storage (base) | 64 GB | 128 GB |
| Storage type | eMMC 5.1 | — |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 13 MP | 50 MP |
| Main camera aperture | f/1.9 | f/1.8 |
| Main sensor size | 1/3.0" | — |
| Rear cameras | 2 | 1 |
| Optical stabilisation | No | No |
| Ultra-wide camera | Yes | No |
| Telephoto camera | No | No |
| Max video | 1080p | 1080p |
| Selfie camera | 16 MP | 8 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 5,000 mAh | 5,000 mAh |
| Battery type | Li-Po | — |
| Wired charging | — | 18 W |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | No | No |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 4 | Wi-Fi 5 |
| Bluetooth | 5 | 5 |
| NFC | No | Yes |
| USB | USB Type-C | USB Type-C 2.0 |
| USB version | — | 2 |
| Satellite navigation | — | GLONASS, GALILEO, BDS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Rear | Side |
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity | Fingerprint (side-mounted), accelerometer, proximity, compass |
| SAR (head) | — | 0.83 W/kg |
| Software | ||
| OS at launch | Android 10 | Android 11 |
| Platform | Android | Android |
| Interface | — | Funtouch 11.1 |
