SAMSUNG J4 SM-J400F Sboot File Download free From here:
File Info Here:
Device Name: J4
Model Number: SM-J400F
File: FRP SAMSUNG
File Type: SBoot
Country : USA & All
How to flash this Sboot file:
Just flash with this file with the help of Odin Flasher software.
2nd Method to bypass Frp of Samsung j400F:
If you want to bypass j400f without any device and computer.
Just follow this video i hope your problem will be solved.