For extended phone lifespan, useful for thirdworld countries when OEMs stopped shipping updates to older models. Rooting/Unlocking can give you option to stay in stock and install security updates yourself or installing custom roms like Lineage OS. I use Samsung S9 which it doesn’t recieve updates anymore but I like keeping it so I rooted it to keep up with modern standards.
For extended phone lifespan, useful for thirdworld countries when OEMs stopped shipping updates to older models. Rooting/Unlocking can give you option to stay in stock and install security updates yourself or installing custom roms like Lineage OS. I use Samsung S9 which it doesn’t recieve updates anymore but I like keeping it so I rooted it to keep up with modern standards.