That's not a good example of 'planned obsolescence'. 2G wasn't 'planned' to be obsolete, it was superseded by better technologies. Also because 2G is a *service* and not a product, it was a business decision to sunset the *service* since there is a maintenance cost to 2G *service*, as well as an opportunity cost in not being able to reserve 2G radio frequencies for 4G and 5G networks.