Over the next month, Leo became a ghost in the J400F community. He posted a guide: “How to fix RIL (Radio Interface Layer) on Project Elixir.” He built a small script to re-enable VoLTE after every reboot. He even backported a security patch from LineageOS 20.
Don’t throw that Galaxy J4+ in the drawer. By installing a , you save a device from e-waste, learn about Android internals, and get a surprisingly capable secondary phone. Start with LineageOS 20 for the safest experience, then experiment with Pixel Experience if you want that Google magic.
If you want to keep the J400F alive until 2026, custom ROMs are the only path forward.
The custom ROM scene for the Samsung Galaxy J4 (J400F) is vibrant, with several popular options available. Some of the most notable include:
Over the next month, Leo became a ghost in the J400F community. He posted a guide: “How to fix RIL (Radio Interface Layer) on Project Elixir.” He built a small script to re-enable VoLTE after every reboot. He even backported a security patch from LineageOS 20.
Don’t throw that Galaxy J4+ in the drawer. By installing a , you save a device from e-waste, learn about Android internals, and get a surprisingly capable secondary phone. Start with LineageOS 20 for the safest experience, then experiment with Pixel Experience if you want that Google magic.
If you want to keep the J400F alive until 2026, custom ROMs are the only path forward.
The custom ROM scene for the Samsung Galaxy J4 (J400F) is vibrant, with several popular options available. Some of the most notable include:
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