POSB Bank Singapore offers all banking services, loans, credit cards, insurance, investments, deposits and much more. Visit our website to know more. Answers to general questions on DBS iBanking services, how to choose DBS iBanking, payment cost / fees, kinds of funds transfers, etc. are available along with. Some disruptions to DBS/ POSB services can be expected due to the transfer (online/mobile banking), Phone Banking, Call Centre and DBS/ POSB Branches.