What does Cual es tu telefono?

Answer 1

It means:

What is your phone number?

Answer 2

This means, "What's your telephone number?"

Answer 3

Which is your telephone, it can also mean whats your number. That depends on the context it is being used in.

Answer 4

cual es tu telefono means what is your phone not what is your phone number

Answer 5

which is your telephone?

Answer 6

"What's your phone number?"