What calling card should I use to travel to Singapore?

There are three telecom companies in Singapore: Starhub (Galaxy), Singtel (New Telecom) and Mobile One(M 1), which bring a certain amount of Internet traffic and free SMS and talk time (different operators have different preferential items). Singtel has the largest number of users among the three, and the signal is good. Singapore's post offices, 7- 1 1 convenience stores and calling card agents all sell calling cards of various denominations. You should take your passport with you. Singapore's mobile phone cards are all from real-name registration system.

The price of the starhub card mentioned by the landlord is 15 USD (about 92 RMB), and there is also a telephone charge of 18 USD (about 165438 RMB). The package includes a 3-day 30MB free flow package. Enjoy your singapore guide; Free of charge; 20 free text messages; Valid for 90 days. The local call charge is 22 cents (about 1 RMB) for the first minute, and 8 cents per minute thereafter. Answers are free.

Above, the landlord can make reference.