Understand, but the SG local number I am calling is roaming in China. The person is using simba hence it's free incoming for the person.
By right even if it's overseas number or local SG number roaming in the country, we should be billed.
Just like simba, before their plan change, those plans without IDD, the person cannot call overseas due to insufficient amount. Once there are available funds, then can call overseas.
If the SG number is call is roaming overseas, it shouldn't be billed as local call. Thats why Which i find it weird,