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- RS4 vs Y21d
itel RS4 vs Vivo Y21d
What RS4 does better (13) and where Y21d wins (2) — every spec side by side.
Dimensions
Size comparison
RS4Y21d
| RS4 | Y21d | Difference | |
|---|---|---|---|
| Height | 163.5 mm | 166.1 mm | −2.6 mm |
| Width | 75.5 mm | 77 mm | −1.5 mm |
| Thickness | 8.2 mm | 8.4 mm | −0.2 mm |
| Weight | 198 g | 209 g | −11 g |
Drawn to the same scale from the official dimensions (front and side).
Why is RS4 better than Y21d?
- RAM12 GB vs 8 GB+50%
- NFCYes · Y21d: No
- Refresh rate120 Hz vs 90 Hz+33%
- Wired charging45 W vs 44 W+2%
- Peak brightness1,300 nits vs 1,000 nits+30%
- Charged in 30 min80% vs 38%2.1×
- CPU frequency2.2 GHz vs 1.8 GHz+22%
- Process6 nm vs 12 nm2×
- 3.5 mm headphone jackYes · Y21d: No
- Weight198 g vs 209 g+6%
- Selfie camera8 MP vs 5 MP+60%
- Main camera aperturef/1.6 vs f/1.8+12%
Why is Y21d better than RS4?
- Battery capacity5,000 mAh vs 6,500 mAh+30%
- Wi-Fi standardWi-Fi 4 vs Wi-Fi 5+25%
Specifications
Side by side
| Design | ||
| Weight | 198 g | 209 g |
| Thickness | 8.2 mm | 8.4 mm |
| Height | 163.5 mm | 166.1 mm |
| Width | 75.5 mm | 77 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Plastic |
| Ingress protection | — | IP68 |
| Water resistance (IPx) | — | IPx8 |
| Glass protection | — | Ion strengthened glass |
| Colours | Silvery White, Elegant Beige, Lurex Black | Lavender Purple, Black |
| Display | ||
| Screen size | 6.6″ | 6.7″ |
| Panel | IPS LCD | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 720 px | 720 px |
| Resolution (height) | 1,612 px | 1,608 px |
| Pixel density | 269 ppi | 264 ppi |
| Refresh rate | 120 Hz | 90 Hz |
| Peak brightness | 1,300 nits | 1,000 nits |
| Screen-to-body ratio | 84.2% | 84% |
| Performance | ||
| Chipset | Mediatek Helio G99 Ultimate | Unisoc T7225 |
| Chip maker | MediaTek | Unisoc |
| Process | 6 nm | 12 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.2 GHz | 1.8 GHz |
| GPU | Mali-G57 MC2 | Mali-G52 MP1 |
| AnTuTu score | 565,979 | — |
| Geekbench 6 (multi-core) | 1,829 | — |
| Memory | ||
| RAM | 12 GB | 8 GB |
| Storage (max) | 256 GB | 256 GB |
| Storage (base) | 128 GB | 128 GB |
| Storage type | UFS 2.2 | eMMC 5.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 50 MP | 50 MP |
| Main camera aperture | f/1.6 | f/1.8 |
| Rear cameras | 1 | 1 |
| Optical stabilisation | No | No |
| Ultra-wide camera | No | No |
| Telephoto camera | No | No |
| Max video | 1080p | 1080p |
| Selfie camera | 8 MP | 5 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 5,000 mAh | 6,500 mAh |
| Battery type | Li-Po | Si/C |
| Wired charging | 45 W | 44 W |
| Charged in 30 min | 80% | 38% |
| 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 | 5.1 | 5.2 |
| NFC | Yes | No |
| USB | USB Type-C | USB Type-C 2.0 |
| USB version | 2 | 2 |
| Satellite navigation | GLONASS, GALILEO | GLONASS, GALILEO, BDS, QZSS |
| Features | ||
| Stereo speakers | Yes | Yes |
| 3.5 mm headphone jack | Yes | No |
| Fingerprint sensor | Side | Side |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro | Fingerprint (side-mounted), accelerometer, proximity, compass |
| Software | ||
| OS at launch | Android 13 | Android 15 |
| Platform | Android | Android |
| Interface | itel OS 13 | Funtouch 15 |
| EU label | ||
| Energy class | — | A |
