Primary Camera
8 MP

Selfie Camera
8 MP

BLU and their J4, opinions

J4 was announced by BLU in 2019

More info about J4

Let's talk a bit about battery - it is most important thing on phone at the moment Removable Li-Po 2200 mAh battery.

Another important things on phone are sensors, on this model installed Accelerometer.

Size and screen

BLU J4 has 72.3mm width, 151mm height and 10mm thick.

J4 by BLU is available in 2 colors, which are blue, black also brown.

Screen on BLU J4 is built with technologies IPS LCD capacitive touchscreen, 16M colors, on that point this model was ahead from only 9% existing mobile phones in screen size contest, having 5.5 inches, 78.1 cm2 (~71.5% screen-to-body ratio) screen supporting resolution 720 x 1440 pixels with ratio 18:9 and having density 293 PPI.

Few words about speed

Quad-core 1.3 GHz Cortex-A7 processor is installed on J4 by BLU, , Graphic card on this device is Mali-400.

Memory on this model is 32GB 1GB RAM, external card slot is supported microSDXC, under the hood is Android 8.1 Oreo (Go edition).

Communication

J4 supporting bands 2G and 3G. Speed is about HSPA 21.1/5.76 Mbps, GSM / HSPA.

GPS Yes, with A-GPS, USB microUSB 2.0, WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot, Radio FM radio, Bluetooth 4.1, A2DP, LE.

Some talk about camera

Video recording on main camera of BLU J4 is available with 720p@30fps modes. This is not bad for example one of available devices at the moment, Huawei Watch GT 2,

Video recording on selfie camera of the J4 is available with 720p@30fps options.