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.

Hard resetting your BLU J4 via Recovery Mode will completely wipe all data, apps, accounts and settings, restoring the device to its original factory state. This is commonly used to fix persistent software issues, boot loops, prepare the phone for sale, or recover from a forgotten screen lock. Back up your data before proceeding as this cannot be undone.

All data will be permanently erased. Back up first.