It means i can't switch to a more private phone easily. For example I sometimes move my sim to a flip phone with only 4g now I won't be able to do that without

It means i can't switch to a more private phone easily. For example I sometimes move my sim to a flip phone with only 4g now I won't be able to do that without contacting the carrier and jumping through hoops. They are enforcing sims as a permanent thing so it is more inconvenient for consumers and more costly for smaller device makers.