My friend traveled to Nauru, how should I call him?

Hello, this depends on the mobile phone card used by the other party. If the other party uses a mobile phone card in China, the user can dial directly to connect. If the other party has changed the local number, he or she needs to dial the phone number. Just dial the area code of the corresponding country before the new number to get connected. To learn more about service discounts, please follow the "Anhui Telecom" WeChat official account.