BLU J4
The BLU J4 is a budget-focused device, built for basic everyday tasks (2019).
2019 · Entry-level · Android 8.1 Oreo (Go edition)ⓘ Grades compare this device against others in its own market segment (Budget), not against every device on the site.
⚡ Quick Specs
Size5.5" · 151 x 72.3 x 10 mm (5.94 x 2.85 x 0.39 in)
RAM1GB
Storage32GB
Main Camera8 MP · LED flash
⚖️ Compare With
✓︎ Pros
✓5.5" IPS LCD display with accurate colours and wide viewing angles
✓Lightweight at 158g — easy to carry
✓3.5mm headphone jack for wired audio without adapters
⊗ Cons
✗Smaller 2,200 mAh battery — may need midday charging
✗Basic its chipset for simple tasks only
✗Only 1GB RAM — apps may reload frequently
✗8 MP main camera — basic quality, limited for photography enthusiasts
⚠️ Not ideal for
Heavy usage daysGamingMultitaskingMultitasking
ℹ️ Overview
Announced
2019, October. Released 2019, October
⚙️ Performance
CPU
Quad-core 1.3 GHz Cortex-A7
OS
Android 8.1 Oreo (Go edition)
RAM
1GB
Apps may reload frequently
💻 Display
Sharpness
293 ppi
Adequate sharpness for daily use
Panel
IPS LCD
IPS: accurate colours, good brightness
📷 Camera
Main Camera
8 MP
Basic quality — limited flexibility
🔋 Battery
Capacity
2,200 mAh
May need midday charging with heavy use
Type
Li-Po 2200 mAh, removable
📱 Design & Build
Weight
158g
Very light — comfortable for long use
Dimensions
151 x 72.3 x 10 mm (5.94 x 2.85 x 0.39 in)
📶 Network
2G Bands
GSM 850 / 900 / 1800 / 1900
3G Bands
HSDPA 850 / 900 / 1900 / 2100
📡 Connectivity
WiFi
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
❓ Frequently Asked Questions
No, the BLU J4 does not support 5G — it supports GSM / HSPA.
No, the BLU J4 does not have NFC.
Yes, the BLU J4 supports microSDXC expandable storage.
The BLU J4 SIM configuration: Nano-SIM + Nano-SIM.
Yes, the BLU J4 has a 3.5mm headphone jack.
Speaker setup: Yes.
The BLU J4 ships with Android 8.1 Oreo (Go edition).
The BLU J4 uses microUSB 2.0.
The BLU J4 supports Wi-Fi 802.11 b/g/n, Wi-Fi Direct.
The BLU J4 has 4.1, A2DP, LE.
