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- J4 vs Z61 Pro
BLU J4 vs Lava Z61 Pro
What J4 does better (3) and where Z61 Pro wins (7) — every spec side by side.
Dimensions
Size comparison
J4Z61 Pro
| J4 | Z61 Pro | Difference | |
|---|---|---|---|
| Height | 151 mm | 147 mm | +4 mm |
| Width | 72.3 mm | 71.8 mm | +0.5 mm |
| Thickness | 10 mm | 9.2 mm | +0.8 mm |
| Weight | 158 g | 160 g | −2 g |
Drawn to the same scale from the official dimensions (front and side).
Why is J4 better than Z61 Pro?
- Storage (max)32 GB vs 16 GB2×
- Storage (base)32 GB vs 16 GB2×
- Selfie camera8 MP vs 5 MP+60%
Why is Z61 Pro better than J4?
- RAM1 GB vs 2 GB2×
- Battery capacity2,200 mAh vs 3,100 mAh+41%
- CPU frequency1.3 GHz vs 1.6 GHz+23%
- CPU cores4 vs 82×
- Max video720p vs 1080p
- Thickness10 mm vs 9.2 mm+9%
- Bluetooth4.1 vs 4.2+2%
Specifications
Side by side
| Design | ||
| Weight | 158 g | 160 g |
| Thickness | 10 mm | 9.2 mm |
| Height | 151 mm | 147 mm |
| Width | 72.3 mm | 71.8 mm |
| Frame | — | Plastic |
| Back | — | Plastic |
| Colours | Blue, Black, Brown | Midnight Blue, Amber Red |
| Display | ||
| Screen size | 5.5″ | 5.4″ |
| Panel | IPS LCD | TFT LCD |
| OLED panel | No | No |
| Resolution (width) | 720 px | 720 px |
| Resolution (height) | 1,440 px | 1,440 px |
| Pixel density | 293 ppi | 295 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Screen-to-body ratio | 71.5% | 72.6% |
| Performance | ||
| Chipset | Processor clock: 1.30 GHz | — |
| CPU cores | 4 | 8 |
| CPU frequency | 1.3 GHz | 1.6 GHz |
| GPU | Mali-400 | — |
| Memory | ||
| RAM | 1 GB | 2 GB |
| Storage (max) | 32 GB | 16 GB |
| Storage (base) | 32 GB | 16 GB |
| Storage type | eMMC 5.1 | eMMC 5.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 8 MP | 8 MP |
| Main camera aperture | — | f/2 |
| Rear cameras | 1 | 1 |
| Optical stabilisation | No | No |
| Ultra-wide camera | No | No |
| Telephoto camera | No | No |
| Max video | 720p | 1080p |
| Selfie camera | 8 MP | 5 MP |
| 4K selfie video | No | — |
| Battery | ||
| Battery capacity | 2,200 mAh | 3,100 mAh |
| Battery type | Li-Po | Li-Po |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | No | No |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 4.1 | 4.2 |
| NFC | No | No |
| USB | microUSB 2.0 | microUSB 2.0 |
| Satellite navigation | — | GLONASS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Sensors | Accelerometer | Accelerometer, proximity |
| Software | ||
| OS at launch | Android 8.1 Oreo (Go edition) | Android 9.0 (Pie) |
| Platform | Android | Android |
