1) Inbound tourists can avoid high roaming charges and costly international direct dialing (IDD) calls by subscribing to eSky's international calling service. eSky offers much lower call rates compared to the major Singapore telcos.
2) The document provides a table comparing call rates from Singapore to various countries using the three major telcos versus eSky. eSky rates are up to 15-16 times cheaper for some countries.
3) The document provides instructions for tourists to get a local SIM card to access eSky's services via their smartphone or regular mobile phone while in Singapore to take advantage of the cost savings.