How do you get phone number in heart gold?

You can't get phone numbers in Pokémon HeartGold and SoulSilver. The games don't have a feature where you can call people or exchange phone numbers.

However, you can use the PokeGear to:

* Check the time.

* Use the Pokédex.

* Check your Trainer Card.

* Call your rival (only after certain story events).

* Listen to the radio.

* Check your backpack.

* Connect with other players via wireless communication.

If you're looking to connect with other players, you can use the wireless features to trade, battle, or participate in special events.