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- 1S (2021) vs C21Y
alcatel 1S (2021) vs Realme C21Y
What 1S (2021) does better (3) and where C21Y wins (3) — every spec side by side.
Dimensions
Size comparison
1S (2021)C21Y
| 1S (2021) | C21Y | Difference | |
|---|---|---|---|
| Height | 165.6 mm | 164.5 mm | +1.1 mm |
| Width | 75.6 mm | 76 mm | −0.4 mm |
| Thickness | 8.8 mm | 9.1 mm | −0.3 mm |
| Weight | 190 g | 200 g | −10 g |
Drawn to the same scale from the official dimensions (front and side).
Why is 1S (2021) better than C21Y?
- Weight190 g vs 200 g+5%
- Main camera aperturef/2 vs f/2.2+10%
- Thickness8.8 mm vs 9.1 mm+3%
Why is C21Y better than 1S (2021)?
- Battery capacity4,000 mAh vs 5,000 mAh+25%
- Storage (max)32 GB vs 64 GB2×
- RAM3 GB vs 4 GB+33%
Specifications
Side by side
| Design | ||
| Weight | 190 g | 200 g |
| Thickness | 8.8 mm | 9.1 mm |
| Height | 165.6 mm | 164.5 mm |
| Width | 75.6 mm | 76 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Plastic |
| Glass protection | — | Corning Gorilla Glass 3 |
| Colours | Elegant Black, Twilight Blue | Cross Black, Cross Blue |
| 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 | 269 ppi | 270 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | — | 400 nits |
| Screen-to-body ratio | 82% | 81.6% |
| Performance | ||
| Chipset | Mediatek MT6762D Helio P22 | Unisoc T610 |
| Chip maker | MediaTek | Unisoc |
| Process | 12 nm | 12 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 1.8 GHz | 1.8 GHz |
| GPU | PowerVR GE8320 | Mali-G52 MP2 |
| Memory | ||
| RAM | 3 GB | 4 GB |
| Storage (max) | 32 GB | 64 GB |
| Storage (base) | 32 GB | 32 GB |
| Storage type | eMMC 5.1 | eMMC 5.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 13 MP | 13 MP |
| Main camera aperture | f/2 | f/2.2 |
| Main sensor size | 1/3.06" | 1/3.06" |
| Rear cameras | 1 | 1 |
| Optical stabilisation | No | No |
| Ultra-wide camera | No | No |
| Telephoto camera | No | No |
| Max video | 1080p | 1080p |
| Selfie camera | 5 MP | 5 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 4,000 mAh | 5,000 mAh |
| Battery type | Li-Po | — |
| Wired charging | 10 W | — |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | — | No |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5 | 5 |
| NFC | No | No |
| USB | microUSB 2.0 | microUSB 2.0 |
| Satellite navigation | GLONASS, GALILEO, BDS | GLONASS, BDS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Rear | Rear |
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity, compass | Fingerprint (rear-mounted), accelerometer, proximity, compass |
| Software | ||
| OS at launch | Android 11 | Android 10/ Android 11 |
| Platform | Android | Android |
| Interface | — | realme UI |
