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- K15x vs Y31t
OPPO K15x vs Vivo Y31t
What K15x does better (6) and where Y31t wins (9) — every spec side by side.
Dimensions
Size comparison
K15xY31t
| K15x | Y31t | Difference | |
|---|---|---|---|
| Height | 166.6 mm | 166.6 mm | = |
| Width | 78.5 mm | 78.4 mm | +0.1 mm |
| Thickness | 8.6 mm | 8.4 mm | +0.2 mm |
| Weight | 212 g | 219 g | −7 g |
Drawn to the same scale from the official dimensions (front and side).
Why is K15x better than Y31t?
- Wired charging45 W vs 44 W+2%
- Memory card slotYes · Y31t: No
- 3.5 mm headphone jackYes · Y31t: No
- CPU frequency2.4 GHz vs 2.2 GHz+9%
- Weight212 g vs 219 g+3%
- Bluetooth5.4 vs 4.2+29%
Why is Y31t better than K15x?
- Main camera13 MP vs 50 MP3.8×
- Water resistance (IPx)IPx4 vs IPx82×
- Stereo speakersNo · K15x: Yes
- Battery capacity6,500 mAh vs 7,200 mAh+11%
- Peak brightness1,125 nits vs 1,200 nits+7%
- Selfie camera5 MP vs 8 MP+60%
- Process6 nm vs 4 nm+50%
- Main camera aperturef/2.2 vs f/1.8+22%
- Thickness8.6 mm vs 8.4 mm+2%
Specifications
Side by side
| Design | ||
| Weight | 212 g | 219 g |
| Thickness | 8.6 mm | 8.4 mm |
| Height | 166.6 mm | 166.6 mm |
| Width | 78.5 mm | 78.4 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Plastic |
| Ingress protection | IP64 | IP68 |
| Water resistance (IPx) | IPx4 | IPx8 |
| Colours | Purple, White | Crimson Red, Seashore Green, Golden Mist |
| Display | ||
| Screen size | 6.8″ | 6.8″ |
| Panel | IPS LCD | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 720 px | 720 px |
| Resolution (height) | 1,570 px | 1,608 px |
| Pixel density | 256 ppi | 261 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,125 nits | 1,200 nits |
| Screen-to-body ratio | 85.2% | 83.9% |
| Performance | ||
| Chipset | Mediatek Dimensity 6300 | Qualcomm SM4450 Snapdragon 4 Gen 2 |
| Chip maker | MediaTek | Qualcomm |
| Process | 6 nm | 4 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.4 GHz | 2.2 GHz |
| GPU | Mali-G57 MC2 | Adreno 613 |
| Memory | ||
| RAM | 6 GB | 6 GB |
| Storage (max) | 256 GB | 256 GB |
| Storage (base) | 128 GB | 128 GB |
| Storage type | UFS 2.2 | — |
| Memory card slot | Yes | No |
| Camera | ||
| Main camera | 13 MP | 50 MP |
| Main camera aperture | f/2.2 | 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 | 5 MP | 8 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 6,500 mAh | 7,200 mAh |
| Battery type | — | Si/C |
| Wired charging | 45 W | 44 W |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | Yes | Yes |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 5 | Wi-Fi 5 |
| Bluetooth | 5.4 | 4.2 |
| NFC | Yes | Yes |
| USB | USB Type-C 2.0 | USB Type-C 2.0 |
| USB version | 2 | 2 |
| Satellite navigation | GLONASS, GALILEO, QZSS | GLONASS, GALILEO, BDS, QZSS |
| Features | ||
| Stereo speakers | No | Yes |
| 3.5 mm headphone jack | Yes | No |
| Fingerprint sensor | Side | Side |
| Sensors | Fingerprint (side-mounted), accelerometer, proximity, compass | Fingerprint (side-mounted), accelerometer, proximity, compass |
| Software | ||
| OS at launch | Android 16 | Android 16 |
| Platform | Android | Android |
| Interface | ColorOS 16 | OriginOS 6 |
