Transitive and intransitive verb

Question

1. You have called London.
2. You have called in London.
3. You have called wrong person.
4. you have called to wrong person.

All the sentences relating to "Phone." When the verb "Call" in transitive and when intransitive?

Thank you.

Answer 1

In the examples you give, the verb call should be used transitively

Call me!

Call London (here understood to mean "someone in London")

Call the wrong number

Call can also be used without an object, but in these cases the object is usually implied by context.

I'll call in the morning. (implicitly meaning "call you..."