BLU J4 specifications

5.50" IPS LCD720×14408MP Camera2200mAhMT6580 28.00nm4-core @ 1.3 GHz1 GB RAM
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The BLU J4 is an entry-level Android Go smartphone from 2019 featuring a 5.5-inch HD IPS LCD display at 720×1440 resolution, powered by the MediaTek MT6580 chipset with 1GB RAM and 32GB storage. It includes 8MP cameras front and rear, a 2200mAh battery, and runs Android 8.1 Go edition. A basic phone targeting the most price-sensitive segment of the market, it trades features for affordability.

See full specifications below ↓

Strengths

  • Pro: 5.5-inch HD display at an ultra-low price point
  • Pro: 8MP rear camera with autofocus for a budget device
  • Pro: Dual SIM with expandable storage support
  • Pro: Android Go edition keeps performance acceptable on 1GB RAM
  • Pro: Lightweight at 158g for a 5.5-inch phone

Weaknesses

  • Con: MT6580 chipset delivers very slow performance
  • Con: 1GB RAM severely restricts multitasking and app compatibility
  • Con: 2200mAh battery is inadequate for daily use
  • Con: No fingerprint sensor for biometric security
  • Con: Limited to 720p display resolution

Full Specifications

Display

5.50"
Screen Size
1MP
Resolution
Size
5.50 inches
Resolution
720 x 1440 pixels
Aspect Ratio
1:2
Pixel Density
293 ppi
Technology
IPS LCD
Touchscreen
yes, Multi-touch

Chipset & Memory

MT6580
Chipset
28nm
Process
1GB
RAM
Chipset
MT6580 (28nm)
Manufacturer
MediaTek
Process
28 nm
GPU
Mali-400 MP2
RAM
1 GB
Storage
32 GB

Camera

8MP
Main Camera
8MP
Front Camera
Main Camera
8 MP
Main Camera Features
Autofocus
Front Camera
8 MP

Battery

2200 mAh
Battery
Capacity
2200 mAh

Design

158g
Weight
151x72.3x10
Dimensions (mm)
Form Factor
Bar
Dimensions
151 x 72.3 x 10 mm
Weight
158 g (5.57 oz)
Colors
Black, Blue

Connectivity

4.1, A2DP, LE
Bluetooth
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
WiFi
Bluetooth
4.1, A2DP, LE
WiFi
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
USB
microUSB 2.0
GPS
GPS

Network

4G
LTE
3G
UMTS
Network Bands
WCDMA: 900 (900), 1700 (1700), 1900 (1900), 2100 (2100); LTE: B28 (700), B17 (700), B12 (700), B20 (800), B26 (850), B5 (850), B8 (900), 900 (900), B66 (1700), B4 (1700), B3 (1800), 1800 (1800), B25 (1900), B2 (1900), 1900 (1900), B1 (2100), B40 (2300), B41 (2500), B7 (2600), B38 (2600)

Features and specifications are subject to change without prior notification.

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