Question

what is mean by 4g expansion?​

Answer 1

Answer:

it has no specific expansions. it is a collection of open wireless standards.

Answer 2

Answer:

4G is the fourth generation of broadband cellular network technology, succeeding 3G, and preceding 5G. A 4G system must provide capabilities defined by ITU in IMT Advanced. ... It has, however, been debated whether first-release versions should be considered 4G LTE.