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- Y400 4G vs Redmi 15
Vivo Y400 4G vs Xiaomi Redmi 15
What Y400 4G does better (10) and where Redmi 15 wins (4) — every spec side by side.
Dimensions
Size comparison
Y400 4GRedmi 15
| Y400 4G | Redmi 15 | Difference | |
|---|---|---|---|
| Height | 162.3 mm | 169.5 mm | −7.2 mm |
| Width | 75.3 mm | 80.5 mm | −5.2 mm |
| Thickness | 7.9 mm | 8.4 mm | −0.5 mm |
| Weight | 196 g | 217 g | −21 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Y400 4G better than Redmi 15?
- Peak brightness1,800 nits vs 850 nits2.1×
- Water resistance (IPx)IPx8 vs IPx42×
- OLED panelYes · Redmi 15: No
- Stereo speakersYes · Redmi 15: No
- Wired charging44 W vs 33 W+33%
- CPU frequency2.8 GHz vs 2.3 GHz+22%
- Weight196 g vs 217 g+11%
- Pixel density395 ppi vs 374 ppi+6%
- Thickness7.9 mm vs 8.4 mm+6%
- Screen-to-body ratio87.9% vs 85.7%+3%
Why is Redmi 15 better than Y400 4G?
- Battery capacity6,000 mAh vs 7,000 mAh+17%
- Refresh rate120 Hz vs 144 Hz+20%
- Memory card slotNo · Y400 4G: Yes
- Screen size6.7″ vs 6.9″+3%
Specifications
Side by side
| Design | ||
| Weight | 196 g | 217 g |
| Thickness | 7.9 mm | 8.4 mm |
| Height | 162.3 mm | 169.5 mm |
| Width | 75.3 mm | 80.5 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Plastic |
| Ingress protection | IP68 | IP64 |
| Water resistance (IPx) | IPx8 | IPx4 |
| Glass protection | — | Corning Gorilla Glass 3 |
| Colours | Purple Twilight, Tropical Green (Dynamic Green), Pearl White | Midnight Black, Titan Gray, Ripple Green |
| Display | ||
| Screen size | 6.7″ | 6.9″ |
| Panel | AMOLED | IPS LCD |
| OLED panel | Yes | No |
| Resolution (width) | 1,080 px | 1,080 px |
| Resolution (height) | 2,400 px | 2,340 px |
| Pixel density | 395 ppi | 374 ppi |
| Refresh rate | 120 Hz | 144 Hz |
| Peak brightness | 1,800 nits | 850 nits |
| Screen-to-body ratio | 87.9% | 85.7% |
| Performance | ||
| Chipset | Qualcomm SM6225 Snapdragon 685 | Qualcomm SM6375 Snapdragon 6s Gen 3 |
| Chip maker | Qualcomm | Qualcomm |
| Process | 6 nm | 6 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.8 GHz | 2.3 GHz |
| GPU | Adreno 610 | Adreno 619 |
| AnTuTu score | — | 459,712 |
| Geekbench 6 (multi-core) | — | 2,179 |
| 3DMark Wild Life Extreme | — | 421 |
| Memory | ||
| RAM | 8 GB | 8 GB |
| Storage (max) | 256 GB | 256 GB |
| Storage (base) | 128 GB | 128 GB |
| Storage type | UFS 2.2 | UFS 2.2 |
| Memory card slot | No | Yes |
| Camera | ||
| Main camera | 50 MP | 50 MP |
| Main camera aperture | f/1.8 | f/1.8 |
| Main sensor size | 1/2.96" | 1/2.88" |
| 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 | 8 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 6,000 mAh | 7,000 mAh |
| Battery type | Si/C | — |
| Wired charging | 44 W | 33 W |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | — | Yes |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 5 | Wi-Fi 5 |
| Bluetooth | 5 | 5.1 |
| NFC | Yes | Yes |
| USB | USB Type-C 2.0 | USB Type-C 2.0 |
| USB version | 2 | 2 |
| Satellite navigation | GLONASS, GALILEO, BDS, QZSS | GLONASS, GALILEO, BDS |
| Features | ||
| Stereo speakers | Yes | No |
| 3.5 mm headphone jack | No | No |
| Fingerprint sensor | Under display | Side |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | Fingerprint (side-mounted), accelerometer, compass |
| SAR (head) | — | 1 W/kg |
| Software | ||
| OS at launch | Android 15 | Android 15 |
| Platform | Android | Android |
| Interface | Funtouch 15 | HyperOS 3 |
| EU label | ||
| Energy class | — | B |
| Battery charge cycles | — | 1,000 |
| Endurance per cycle | — | 67 h |
| Repairability class | — | C |
| Drop resistance class | — | D |
