Maybe like this:Singtel: $0.28/mins $0.10/sms M1: $0.05/sms (1) $0.05/mins(超级非繁忙时段:21pm-09am and Sunday) (2) $0.10/mins(非繁忙时段: 19-21pm) (3) $0.20/mins(other) Starhub: 接电话不需付费，好像是短信$0.10/sms,电话$0.20/mins（信号比较差） 大致是这样的，仅作参考...