portability

noun

1. (uncountable, usually)The quality of being portable.
2. (uncountable, usually)The quality of being portable.
3. (uncountable, usually)The quality of being portable.

   “[…] number portability is crucial for competition, because it enables consumers to change service providers without being forced to change their phone number. Number portability is a statutory requirement, and it imposes costs on all[…]”