Dual Sim Phone Functionality on your Contracts

I am disappointed that you do not offer your phones in dual sim. I recently was looking to change carriers and was disappointed to find out you do not allow dual sim phones to have the dual sim functionality. I believe I should have this choice. Especially when taking out a contract and indirectly paying for the device. I hope you change this soon and consider the immeasurable loss in reputation and of customers to competitors if you fail to adapt to device trends. Regards not your client