Can I call Malaysia from Singapore?

Singapore's mobile phone cards can basically roam internationally. Generally, as long as there is 7 yuan in the card, you can roam internationally.

Generally, when buying a SIM card, the instructions in the card will introduce how to make a phone call when roaming internationally. Even if you forget, when you arrive in another country, the new store will send you a text message telling you how to make a phone call.

Different service providers make calls in different ways. I'm using a new card now. When roaming, the calling method is * 12 1*+ country code+phone number+#

When roaming, texting has not changed, and the country code and telephone number have been added.