BLU J4
$69
Overview
BLU J4 is a budget Android smartphone released in 2019 with a 5.5-inch IPS LCD, powerful processor chipset, 8 main camera, and 2200 mAh battery.
Priced at $69, it targets users seeking budget performance.
Specifications of BLU J4
The display of BLU J4 measures 5.5 inches with IPS LCD technology. Peak brightness reaches 300 nits for excellent outdoor visibility. The screen renders at 720x1440 pixels resolution.
The camera system of BLU J4 features 1 rear cameras: 8 main. Video recording supports up to 720p.
The battery of BLU J4 has 2200mAh capacity with 5 wired charging. A full charge takes approximately 240 min minutes.
The memory of BLU J4 offers 1GB RAM with 32GB storage options. RAM uses DDR3 technology. Storage is 32GB 1GB RAM.
The connectivity of BLU J4 includes Wi-Fi Wi-Fi 802.11 b/g/n, Wi-Fi Direct, and Bluetooth 4.1.
The build of BLU J4 weighs 158.0g with Plastic frame and Plastic back. Dimensions measure 151 x 72.3 x 10 mm.
The software of BLU J4 runs Android 8.1 Oreo (Go edition) with Android Go. Software support extends 1 years through 2027.
Compare BLU J4
Frequently Asked Questions about BLU J4
BLU J4 has a 8 camera suitable for casual photography. For professional photography, consider phones with higher-resolution sensors.
BLU J4 receives 1 years of updates through 2027. Consider this when planning long-term device usage.
BLU J4 has a 2200mAh battery. Battery life varies based on usage patterns.
BLU J4 at $69 is a budget device. It's worth buying if you prioritize affordability over premium features.
BLU J4 supports 5 wired charging with full charge in approximately 240 min minutes.
BLU J4 is available in 32GB storage options. Storage is not expandable, so choose your capacity based on your needs.
BLU J4 has a 5.5-inch IPS LCD with 60Hz refresh rate and 300 nits peak brightness. HDR support includes No.
BLU J4 in Category Rankings
See how BLU J4 ranks in these categories:
Verdict
The BLU J4 delivers practical value for users prioritizing affordability over premium features. Pick this phone for essential smartphone functionality, if you prioritize affordability while still needing core features.
Key Specifications
Display
5.5"
Main Camera
8
Chipset
Full Specifications
Network
| Technology | GSM / HSPA |
| 2G Bands | GSM / |
| 3G Bands | HSDPA 850 / 900 / 1900 / 2100 |
| 4G LTE Bands | LTE band 2(1900), 4(1700/2100), 5(850), 7(2600), 12(700), 17(700) |
| 5G Sub-6 Bands | N/A |
| 5G mmWave Bands | N/A |
| Speed | N/A |
| Carrier Aggregation | |
| SIM | Nano-SIM |
| Dual SIM Mode | Dual SIM |
| eSIM Support | |
| VoLTE Support | N/A |
| VoWiFi | N/A |
| NR CA Support |
Launch
| Announced | 2019 |
| Status | Discontinued |
| Availability | N/A |
| Model Variants | N/A |
| Launch Price | $99 |
Body & Design
| Dimensions (mm) | 151 x 72.3 x 10 mm |
| Weight (g) | 158.0 |
| Build Materials | Plastic |
| Frame | Plastic |
| Back Finish | Plastic |
| Colors | ["Blue", "Black", "Brown"] |
| IP Rating | N/A |
| Rugged Certifications | N/A |
| Ingress Gaskets | N/A |
| Form Factor | Bar |
| Hinge Type | N/A |
| Folded Dimensions | N/A |
| Thermal Solution | Passive |
| Notification/Alert | |
| Haptics | Basic |
Display
| Panel Type | IPS LCD |
| Size (inches) | 5.5 |
| Resolution (px) | 720x1440 pixels |
| Aspect Ratio | 9:16 |
| Pixel Density (ppi) | 210 |
| Screen-to-body Ratio (%) | 71.5 |
| Refresh Rate (Hz) | 60 |
| Adaptive Refresh Rate | |
| Touch Sampling Rate (Hz) | 60 |
| Peak Brightness (nits) | 300 |
| HDR Standards | |
| Color Gamut | sRGB |
| Color Depth | 24 |
| PWM Dimming (Hz) | N/A |
| Glass Protection | Asahi Dragontrail Glass |
| Oleophobic Coating | N/A |
| Curvature | Flat |
| Always-on Display | |
| Display Driver IC | N/A |
| Cover Display |
Platform (SoC)
| OS at Launch | Android 8.1 Oreo (Go edition) |
| Update Policy | 1 years |
| Chipset | N/A |
| CPU | Quad-core 1.3 GHz Cortex-A7 |
| GPU | Mali-400 |
| NPU/AI TOPs | N/A |
| ISP Features | Basic |
| Modem | Mediatek MT6580 |
| Wi-Fi/Bluetooth Chip | N/A |
| Throttling Behavior | N/A |
| Geekbench Single-Core | 400 |
| Geekbench Multi-Core | 1200 |
| AnTuTu Score | 35000 |
| 3DMark Scores | N/A |
Memory & Storage
| RAM | 1GB |
| RAM Type | DDR3 |
| Storage | 32GB |
| Storage Type | 32GB 1GB RAM |
| Storage Speed | eMMC 5.1 |
| Expandable Storage | microSDXC |
| Slot Type | microSD |
| USB OTG | |
| Filesystem Encryption |
Main Camera System
| Rear Cameras | 1 |
| Main Sensor | 8 |
| Main Sensor Size | 1/1.83" |
| Main Sensor Model | N/A |
| Main Lens | f/2.2, 28mm |
| OIS | |
| Autofocus | AF |
| Pixel Binning | |
| Ultrawide | N/A |
| Telephoto | N/A |
| Macro | N/A |
| Depth/ToF/LiDAR | |
| Flicker/Color Sensors | N/A |
| Flash | LED |
| Video Resolution | 720p |
| HDR/Dolby Vision Video | |
| Video Codecs | H.264 |
| Slow Motion | |
| Video Stabilization | EIS |
| Night Mode Features | basic |
| RAW/Pro Controls | N/A |
Selfie Camera
| Resolution | 8 |
| Sensor Size | 1/5 inch |
| Aperture | f/2.4 |
| AF/OIS | |
| Secondary Front Cam | |
| Front Flash | |
| Video | 720p |
| HDR/Dolby Vision | N/A |
| Face Unlock | basic |
Audio
| Loudspeakers | |
| 3.5mm Jack | |
| Hi-Res Audio | |
| Spatial Audio / Dolby Atmos | |
| Microphones | 1 |
| Bluetooth Codecs | aac |
| DAC/Amp | Basic |
Connectivity
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
| Wi-Fi Features | Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
| Bluetooth | 4.1 |
| NFC | |
| IR Blaster | |
| UWB | N/A |
| Positioning | GPS |
| Dual-Band GNSS | |
| FM Radio | |
| USB | Micro-USB |
| Display Out | |
| eSIM Capacity |
Sensors
| Fingerprint Sensor | N/A |
| 3D Face ID | N/A |
| Accelerometer | |
| Gyroscope | |
| Magnetometer | |
| Proximity Sensor | |
| Ambient Light | |
| Barometer | |
| Thermo/Hygrometer | N/A |
| UV Sensor | N/A |
| Hall Sensor | |
| Color Temp Sensor | |
| Health Sensors | |
| Satellite SOS |
Battery & Charging
| Capacity (mAh) | 2200 |
| Type | Li-Po |
| Removable | |
| Endurance Rating | N/A |
| Wired Charging | 5 |
| Wired Standard | 5W |
| 0-50% Time (mins) | 120 min |
| Full Charge Time | 240 min |
| Wireless Charging | N/A |
| Wireless Standard | N/A |
| Reverse Wireless | N/A |
| Reverse Wired | |
| Charger in Box | 5W |
| Battery Health Features | Basic |
Software
| OS at Launch | Android 8.1 Oreo (Go edition) |
| Update Window | 1 years |
| UI Skin / Launcher | Android Go |
| Feature Drops | N/A |
| App Cloning | N/A |
| Game Mode | |
| Privacy Features | Basic |
| Accessibility | Basic |
| Satellite Messaging UI |
Miscellaneous
| In-Box Contents | Phone, Charger, Cable, Manual |
| Recycled Materials (%) | N/A |
| Repairability Score | N/A |
| Warranty | N/A |
Reviews & Ratings
186 ratings
Showing 3 of 186 reviews
Alex R.
2 weeks ago
Absolutely love the camera on this phone! The zoom is incredible and the photos are so crisp. Battery life is also a huge plus.
Ben C.
1 month ago
Great performance and beautiful display. My only complaint is that it feels a bit heavy, but you get used to it. Solid phone overall.
Chloe D.
3 months ago
The best phone I've ever owned. It's fast, the software is clean, and the build quality is top-notch. Highly recommend!