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.

Factory resetting your BLU J4 through the Settings menu is the easiest way to erase all personal data and restore the device to factory defaults. This method is ideal when the phone is still accessible and functional. All apps, contacts, photos and accounts will be permanently removed so ensure you have backed up everything important first.

All personal data, accounts, and apps will be permanently removed.