Warning: The LG G4 (T-Mobile) is no longer maintained. A build guide is available for developers that would like to make private builds, or even restart official support.
Special boot modes
Recovery: With the device powered off, hold Volume Down + Power until the LG logo appears, then release Power for a second and hold it again until the recovery comes up.Note: Accept the factory reset prompt using the hardware buttons. If you have done everything correctly, this will not actually reset your device but instead will boot the custom recovery.
Bootloader/Fastboot/Download: With the device powered off, hold Volume Up + Power.
Find help online
You can find assistance with LineageOS on our subreddit, or in #LineageOS on Libera.Chat.
Note: This page is auto-generated for the LG G4 (T-Mobile), based on the device’s information, located here. You can find similar instructions for every officially-supported device on this wiki.