to function as specified
This will come in handy
of news, etc: to become known
of a competitor: to finish as specified
He came in last
to be useful, or to function as specified
This will come in handy
to assume a role or function
That's where you come in
said of news, etc: to be circulated or become known
said of income: to be received
said of a radio signal: to be received as specified
He was coming in loud and clear
said of a competitor: to finish in a specified position
His horse came in last
come in for
to become subject to (something unwelcome, e.g. criticism)