Home / BLU J4 / Fix Black Screen
How to Fix Black Screen — BLU J4
How to Fix Black Screen — BLU J4
The BLU J4 is a 2019 Android 8.1 Oreo smartphone with 1GB and 32GB internal storage. It features a 5.5", IPS LCD, 720.0x1440.0 display and is available in Blue, Black, Brown.
The J4 is equipped with a Li-Po 2200 mAh, removable, a 8 MP, 720p@30fps main camera, a 8 MP, 720p@30fps front camera. The device uses a Nano-SIM + Nano-SIM configuration. It weighs 158 g.
A black screen on the BLU J4 can occur due to a drained battery, a software crash, or the screen becoming unresponsive. In most cases this can be resolved with a force restart or a short charging period without any data loss. Follow the steps below in order before considering a factory reset.
On your BLU J4: charge for 30+ minutes with a different cable and charger
Hold Power for 15–20 seconds
If still black: hold Power + Volume Down for 10 seconds
Try holding Power + Volume Up to enter Recovery Mode
In Recovery: select 'Reboot system now'
If Recovery loads: wipe cache partition then reboot
Last resort: factory reset from Recovery — erases all data
Was this guide helpful?