When using your International Roaming service for Smart postpaid, you may call and text local number within the country you're in, landline and mobile phone numbers in the Philippines and numbers in other countries. Just make sure you're using the correct number format.
Note: Voice Roaming is available to Smart Postpaid and Infinity subscribers. For Smart Prepaid and Talk 'N Text subscribers, please refer to the list of countries supporting prepaid call roaming.