Before undertaking the installation process, it is important to understand the compromise profile of running a legacy build of LineageOS on this specific model number: What Works Perfectly
By moving past Samsung’s restrictive, outdated stock software, LineageOS gives the Galaxy Tab 4 7.0 a meaningful second life, keeping perfectly functional hardware out of the landfill.
Do expect a smooth daily driver experience. The hardware is severely outdated, and the lack of official GPU/Camera support limits the ROM to hobbyist or retro usage.